[gf; 2 Ig; ghu;f;f

,uz;L kzpj;jpahyk;

f.ngh.j. (c.juk;) cjtpf; fUj;juq;F - 2014

,urhadtpay; I ftdpf;Ff:

* vy;yh tpdhf;fSf;Fk; tpilaspf;Ff.

* rupahd my;yJ kpfg; nghUj;jkhd tpiliaj; njupT nra;f.

mfpy thAkhwpyp R = 8.314JK-1 mol -1 mtfhjNuh khwpyp NA = 6.022 x 10 23 mol -1

gpshq; khwpyp = 6.626 x 10 -34 JS xspapd; Ntfk; = 3 x 10 8 ms -1

1. xU jhz;lyy;yh %yfk; X MdJ epWj;jhLtis (rPNrh) tbtKs;s XCl4

−maid

cz;lhf;Ffpd;wJ. jiu epiyapy; cs;s RahjPd X mZtpd; nghJ ,yj;jpud; epiyaikg;G

gpd;tUtdtw;wpy; ahJ?

(1) ns2np1 (2) ns2np2 (3) ns2np3 (4) ns2np4 (5) ns2np5

2. ru;trk epiyikfspd; fPo; xU thA mZ %Yf;F Xu; ,yj;jpud; %y; I toq;Fk;NghJ

gpd;tUk; ve;j %yfk; kpff; $ba msT ntg;gj;ij ntspg;gLj;Jfpd;wJ?

(1) Li (2) Be (3) N (4) F (5) Cl

3. KidTg; gq;fPl;LtY> mad;> Kidtpypg; gq;fPl;LtY vd;Dk; gpizg;G ,ay;Gfis xj;j

Nru;itfs; rupahd xOq;FKiwapy; ,lk;ngWk; tpil gpd;tUtdtw;wpy; ahJ?

(1) SiO2, CaO, I2 (2) CaO, SiO2, I2 (3) I2, CaO, SiO2

(4) CaO, I2, SiO2 (5) SiO2, I2, CaO

4. gpd;tUk; vt;tpilapy; O2 , O22− , O3 vd;Dk; ,dq;fspd; O - O gpizg;G ePsk; khWk; tpjk; rupahff;

fhl;lg;gl;Ls;sJ?

(1) O2 , < O3 < O22−

(2) O3 , < O2 < O22−

(3) O2 , < O22− < O3

(4) O3 , < O22− < O2 (5) O2

2− < O3 < O2

5. Pb ,d; rhu; mZj; jpzpT Cr ,d; rhu; mZj; jpzptpd; Vwj;jho ehd;F klq;fhFk;. Pb ,d;

jpzpTr; rjtPjk; 80% MfTs;s Pb ck; Cr ck; khj;jpuk; ,lk;ngWk; xU fyitapy; Pb ,d;

%w; gpd;dk; ahJ?

(1) 0.20 (2) 0.25 (3) 0.50 (4) 0.65 (5) 0.80

6. 77°C ,y; N2 thAtpd; fpl;ba ,il tu;f;f %y Ntfk; ahJ? (rh.m.jp. N - 14)

(1) 1.77 × 101m s−1 (2) 3.12 × 102 m s−1 (3) 5.58 × 102 m s−1 (4) 7.89 × 102 m s−1 (5) 3.12 × 105 m s−1

7. A, B vd;Dk; jputq;fisf; fye;J cz;lhf;fg;gLk; Jtpjf; fiury; ,yl;rpakhf ele;J

nfhs;fpd;wJ. A, B Mfpad fyf;Fk;NghJ eilngWk; fpg;]; rf;jp khw;wk; fyitapy; A apd; %w; gpd;dk; (XA) cld; khWk; tpjk; gpd;tUk; vt;tiugpy; rupahf tifFwpf;fg;gl;Ls;sJ?

XA

ΔG

0.50 XA XA XA XA

ΔG ΔG ΔG ΔG

0.5 0.50.5 0.5

0 0 0 0

(1) (2) (3) (4) (5)

2014.06.13 PDFFinal Proof

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- 2 - 8. Xu; mZtpy; cs;s Xu; ,yj;jpudpd; milahsj;ij tptupg;gjw;F (n, l, ml, ms) vd;Dk; nrhl;nlz;

njhFjpiag; gad;gLj;jyhk;. (n + l ) = 3 Mf ,Uf;FkhW Xu; mZtpy; ,Uf;fj;jf;f nrhl;nlz;

njhFjp vz;zpf;if ahJ?

(1) 2 (2) 3 (3) 4 (4) 6 (5) 8

9. gpd;tUk; mad;fspd; ePNuw;w ntg;gTs;Siw mjpfupf;Fk; xOq;FKiw rupahff; fhl;lg;gl;Ls;s

tpil ahJ?

(1) Cl− < Na+ < Mg2+< Al3+ (2) Al3+< Mg2+< Na+ < Cl−

(3) Na+ < Cl− < Mg2+< Al3+

(4) Na+< Cl− < Al3+ < Mg2+

(5) Mg2+ < Al3+ < Cl− < Na+

10. Xu; (NH4)2SO4(aq) fiurYld; Mg J}isr; Nru;f;Fk;NghJ eilngWk; jhf;fk; njhlu;ghf kpfTk;

cz;ikahdJ gpd;tUtdtw;wpy; ahJ?

(1) NH3 thA khj;jpuk; ntsptUfpd;wJ.

(2) N2 thA khj;jpuk; ntsptUfpd;wJ.

(3) H2 thA khj;jpuk; ntsptUfpd;wJ.

(4) SO2, NH3 Mfpa ,U thAf;fSk; ntsptUfpd;wd.

(5) H2, NH3 Mfpa ,U thAf;fSk; ntsptUfpd;wd.

11. Rthiyr; Nrhjidapy; thA mZ J}z;ba epiyikf;F khWjiy M(g) M(g)* vd tifFwpf;fyhk;. Nkw;Fwpj;j nrad;Kiwf;F cupa rf;jp khw;wk; 180.66 kJ mol−1 vdpd;>

M*(g) M(g) vd;Dk; nrad;Kiwapy; ntsptUk; kpd;fhe;jf; fjpu;g;gpd; miyePsk;

gpd;tUtdtw;wpy; ahJ?

(1) 110.0 nm (2) 497.2 nm (3) 662.6 nm (4) 1100.0 nm (5) 6626.0 nm

12. xU Nrjdr; Nru;it X MdJ Br2 ePupy; fgpy epwj;ij ePf;Fk; mNj Ntis Na cld; jhf;fk;

Gupe;J Ijurd; ntsptpLfpd;wJ. X gpd;tUtdtw;wpy; ahjhf ,Uf;fyhk;? (1) CH2=CHCl (2) C2H5NH2 (3) C6H5OH (4) CH3COOH (5) CH3C≡CCH3

13. xU khwh ntg;gepiyapy; eilngWk; ,urhadj; jhf;fk; xd;wpd; Cf;fy; jhf;fk; njhlu;ghfg;

gpd;tUk; vf;$w;W cz;ikahdJ?

(A) fpg;]; rf;jp khw;wj;jpy; (ΔG) apd; kiw ntg;gk; mjpfupf;fpd;wJ.

(B) cupa ntg;gepiyapy; tPj khwpypapd; ngWkhdk; mjpfupf;fpd;wJ.

(C) jhf;fj;jpd; Vtw; rf;jp Fiwfpd;wJ.

(D) gad;gL Nkhjw; gpd;dk; khWtjpy;iy.

(1) A, B Mfpad khj;jpuk; (2) B, C Mfpad khj;jpuk; (3) C, D Mfpad khj;jpuk;

(4) D, A Mfpad khj;jpuk; (5) A, B, D Mfpad khj;jpuk;

14. 50.00 g jpzpTs;s xU Zn jfl;il 100 cm3fdtsTs;s xU ePu; AgNO3 fiurypy;

mkpo;j;Jk;NghJ xU Fwpj;j Neuj;jpw;Fg; gpd;du; cNyhfj;jfl;bd; jpzpT 53.02 g vdf; fhzg;gl;lJ. ,r;re;ju;g;gj;jpy; fiurypd; Zn2+

nrwpT ahJ?

(rh.m.jp. Zn = 65 Ag = 108) (1) 0.020 mol dm−3 (2) 0.140 mol dm−3 (3) 0.200 mol dm−3 (4) 0.285 mol dm−3 (5) 0.464 mol dm−3

15. A B vd;Dk; Kjy; tupirj; jhf;fj;ijf; fUJf. A apd; njhlf;fr; nrwpT 0.8 mol dm−3 Mf ,Uf;Fk; mNj Ntis 120 nrf;fd;fSf;Fg; gpd;du; mjd; nrwpT 0.2 mol dm−3

MFk;.

,j;jhf;fj;jpd; miu MAl;fhyk; ahJ?

(1) 15 nrf;fd; (2) 30 nrf;fd; (3) 40 nrf;fd; (4) 60 nrf;fd; (5) 120 nrf;fd;

16. ePiur; Rj;jpfupf;Fk; nrad;Kiwf;Fg; gad;gLj;jg;gLk; nghUshf mikahjJ>

(1) FNshuPd; (2) FNshuPd; <nuhl;irl;L (3) XNrhd; (4) Ijurd; Ngnuhl;irl;L (5) nghw;whRg; gbfhuk;

[gf; 3 Ig; ghu;f;f

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17. CH3CHBrCH=CHCH3 ,w;F ,Uf;fj;jf;f Kg;gupkhzr; rkgFjpaq;fspd; vz;zpf;if ahJ?

(1) 2 (2) 3 (3) 4 (4) 5 (5) 6

18. [Fe(CN)5 NO]3− ,d; rupahd IUPAC ngau; ahJ?

(1) pentacyanidonitriosyl ferrate (II) ion (2) pentacyanidonitrosylferrate(II) ion (3) pentacyanidonitridosylferrate(III) ion (4) pentacyanido nitrosylferrate(II) iron (5) pentacyanido nitrosylferrate (II) ion

19. jhf;fpfshf PCl 3 ck; Na ck; toq;fg;gl;bUg;gpd; gpd;tUk; Nru;itfSs; vjid CH3 CH2 OH Ig; gad;gLj;jp gpd;tUk; Nru;it / Nru;itfs;; vjidg; ngwyhk;?

(A) CH3 CH2 OH (B) CH3 CH2 O

- Na+ (C) CH3 CH2 -O- CH2 CH3 (D) CH2 = CH2

(1) A khj;jpuk;. (2) B khj;jpuk;. (3) A, B khj;jpuk;. (4) A, B, D khj;jpuk;. (5) A, B, C, D Mfpa vy;yhk;

20. fPNo jug;gl;Ls;s Nru;itapd; IUPAC ngau;

H2N CCH2 CH2

CH3 H

OH

=CH CH

(1) 5 - amino - 4 - methylpent - 1 - en - 3 - ol (2) 1 - amino - 2 - methylpent - 4 - en - 3 - ol (3) 5 - amino - 3 - hydroxy - 4 - methylpent - 1 - ene (4) 5 - amino - 4 - methylpent - 1 - ene - 3- ol (5) 5 - amino - 4 - methyl - 3 - hydroxypent - 1 - ene

21. xU Nrjdr; Nru;it A iar; nrwpe;j NH3 cld; ntg;gkhf;Fk;NghJ fpilf;Fk; Nru;itapd; xU

%yf;$wpd; H mZf;fspd; vz;zpf;if A apd; xU %yf;$wpd; H mZf;fspd; vz;zpf;ifapYk;

ghu;f;f xd;wpdhy; $bajhFk;. A ia PCl3 cld; jhf;fk;Gupar; nra;J gpd;du; NH3 cld; njhopw;gl

tpLk;NghJ fpilf;Fk; Nru;itapd; xU %yf;$wpy; cs;s H mZf;fspd; vz;zpf;if A njhlu;ghf

,uz;bdhy; mjpfupf;fpd;wJ. A apw;F fPo;tUk; vr; Nru;it / Nru;itfs;; cfe;jJ / cfe;jd?

(A) CCH3

H

CH2 CH2 OH

OH

(B) CCH3

H

CH2 COOH

OH

(C) O

C Cl CCH3

H

CH2

OH

(D) O

C Cl CCH3

H

CH2

Cl

(1) A khj;jpuk; (2) B khj;jpuk; (3) A, B Mfpad khj;jpuk;

(4) A, B, D Mfpad khj;jpuk; (5) A, B, C, D Mfpa vy;yhk;

22. vy;yh kPz;Lk; tUk; myFfspYk; ngd;rPd; tisak; ,Uf;Fk; xLq;fpa Neu;Nfhl;Lr; rq;fpypg;

gy;gFjpak; gpd;tUtdtw;wpy; ahJ?

(1) ieNyhd; 6 ( 6 (2) a+upahg; Nghky;bifl;L

(3) gy;ijuPd; (4) njupyPd; (5) Ngf;iyw;W

-

[gf; 4 Ig; ghu;f;f

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- 4 - 23. gpd;tUtdtw;wpy; vJ NO thA gq;fspg;Gr; nra;ahj nrad;KiwahFk;?

(1) SO3 cz;lhjy;

(2) kz;zpd; pH ngWkhdk; mjpfupj;jy;

(3) XNrhd; gil mopjy;

(4) ePupd; NO3

− nrwpT mjpfupj;jy;

(4) xspapurhadtpaypd; tfpghfj;jpw;F VJthd nghUs;fis cz;lhf;fy;

24. A vd;Dk; xU Nrjdr; Nru;it ZnCl2 MdJ nrwpe;j HCl mkpyj;Jld; jhf;fk;Gupe;J xU

tpisnghUs; B iaj; jUfpd;wJ. B MdJ kJrhug; nghw;whrpak; Ijnuhl;irl;Lld; ,sQ;

#lhf;fg;gLk;NghJ fpilf;Fk; tpisnghUs; mNkhdpahf; Fg;gpuRf; FNshiul;Lf; fiurYld;

xU fgpy tPo;gbitj; jUfpd;wJ. A Nru;itahtjw;Fg; gpd;tUk; vjw;Ff; $Ljyhd rhj;jpaf;$W

cs;sJ?

(1) C C ClCH3

CH3 CH3

CH3OH

(2) C C ClCH3

H H

CH3OH

(3) C C ClCH3

CH3 H

HOH

(4) C C ClH

H CH3

CH3OH

(5) C C ClCH3

H H

HOH

25. xU thA A apd; 4 mol MdJ xU khwhf; fdtsTs;s ghj;jpuj;jpy; itf;fg;gl;Lg; gpd;tUkhW

rkepiyia mila tplg;gl;lJ.

2 A(g) A2(g)

127 °C ,y; rkepiyg;gl;l njhFjpapd; xl;Lnkhj;jkhd mKf;fk; 8.314 × 105 Pa ck; tspf;

fyitapd; mlu;j;jp 10 kg m−3 ck; MFk;. A apd; rh.m.jp. 30 vdpd;> A2 (g) ,d; gFjpaKf;fk;

(1) 2.77 × 105 Pa (2) 4.16 × 105 Pa (3) 5.54 × 105 Pa (4) 8.31 × 105 Pa (5) 1.25 × 106 Pa

26. gpd;tUk; Nru;itfis Br2/ FeBr3 ,d; %yk; GNuhkPNdw;wj;jpw;F cs;s ,yFj;jd;ik VWtupiria

xOq;FKiwapy; rupahff; fhl;LtJ

CHO CH3

(a) (b) (c)

NH2 CONH2 NH2

CHO CH3

(d)

NHCH3

(1) a < b < c < d (2) b < a < c < d (3) b < c < a < d (4) c < b < a < d (5) d < a < c < b

27. gpd;tUk; Nru;itfspy; KiwNa typikahd> eype;j kpd;nghUs; Nrhb

(1) NaCl ck; PbSO4 ck; (2) HF ck; Ca(OH)2 ck;

(3) Na2SO4 ck; MgCl2 ck; (4) NH4OH ck; (NH4)2SO4 ck;

(5) PbSO4 ck; CH3COOH ck;

28. T °C ntg;gepiyapy; SO2(g) + NO2 (g) SO3 (g) + NO (g) vd;Dk; milj;j rkepiyg;gl;l

njhFjpapd; rkepiy khwpyp Kc = 16 MFk;. SO2, NO2 , SO3 , NO vd;Dk; thAf;fs; 1.0 mol tPjk; 1.0 dm3

fdtsTs;s xU ghj;jpuj;jpy; fyf;fg;gl;ld. mt;ntg;gepiyapy; rkepiyg;gl;l

njhFjpapy; cs;s NO ,d; msT ahJ?

(1) 0.6 mol (2) 0.8 mol (3) 1.0 mol (4) 1.6 mol (5) 1.8 mol

[gf; 5 Ig; ghu;f;f

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29. ePupNy rpwpjstpy; fiuaj;jf;f M(OH)2 Nru;itapd; 0.04 mol MdJ 0.07 mol dm−3 nrwpTs;s

HCl fiurypd; l.00 dm3

cld; Nru;j;J ed;whff; fyf;fg;gLfpd;wJ. cupa ntg;gepiyapy;

M(OH)2 ,d; fiujpwd; ngUf;fk; (Ksp) MdJ 3.5 ×10−10mol3dm9 Mf ,Uf;Fk; mNj Ntis

MCl 2 MdJ ePupy; ed;whff; fiufpd;wJ. fiurypd; OH− nrwpT ahJ?

(1) 1.0 × 10−5mol dm−3 (2) 1.0 ×10−4mol dm−3

(3) 1.0 ×10−2mol dm−3

(4) 8.0 × 10−2mol dm−3 (5) 2.0 × 10−5mol dm−3

30. A (s)/ A2+(aq) // B2+(aq) / B(s) fyj;jpd; epak kpd;dpaf;f tpir 0.85 V MfTk; A (s)/ A2+(aq) // C2+(aq) / C(s) fyj;jpd; epak kpd;dpaf;f tpir 1.25 V MfTk; ,Ug;gpd;> B (s)/ B2+(aq), C(s)/ C2+(aq) vd;Dk; ,U kpd;tha;fisj; njhLj;J cz;lhf;fg;gLk; fyj;jpd; epak kpd;dpaf;f tpir

gpd;tUtdtw;wpy; ahJ?

(1) −2.10 V (2) −0.40 V (3) 0.40 V (4) 1.05 V (5) 2.10 V

31 njhlf;fk; 40 tiuAs;s tpdhf;fs; xt;nthd;Wf;Fk; (a), (b), (c), (d) vd;Dk; ehd;F njupTfs;

jug;gl;Ls;sd. mtw;Ws; xd;W jpUj;jkhdJ my;yJ xd;Wf;F Nkw;gl;lit jpUj;jkhdit.

jpUj;jkhd njupit / njupTfisj; njupe;njLf;f.

(a), (b) Mfpad khj;jpuk; jpUj;jkhditnadpy; (1) ,d; kPJk; (b), (c) Mfpad khj;jpuk; jpUj;jkhditnadpy; (2) ,d; kPJk; (c), (d) Mfpad khj;jpuk; jpUj;jkhditnadpy; (3) ,d; kPJk; (d), (a) Mfpad khj;jpuk; jpUj;jkhditnadpy; (4) ,d; kPJk; NtW njupTfspd; vz;Nzh> Nru;khdq;fNsh jpUj;jkhditnadpy; (5) ,d; kPJk; ckJ tpilj;jhspy; nfhLf;fg;gl;l mwpTWj;jy;fSf;fika tpiliaf; Fwpg;gpLf.

Nkw;$wpa mwpTWj;jw; RUf;fk;

(1) (2) (3) (4) (5)

(a), (b)Mfpad

khj;jpuk;

jpUj;jkhdit

(b), (c)Mfpad

khj;jpuk;

jpUj;jkhdit

(c), (d)Mfpad

khj;jpuk;

jpUj;jkhdit

(d), (a)Mfpad

khj;jpuk;

jpUj;jkhdit

NtW njupTfspd;

vz;Nzh>

Nru;khdq;fNsh

jpUj;jkhdit

31. fhgd; ,Ury;igl;ilAk; mrw;NwhidAk; fye;J Xu; ,yl;rpaf; fiury; cz;lhf;fg;gLfpd;wnjdf;

nfhs;f.

27 °C ,y; fhgd; ,Ury;igl;ilAk; mrw;NwhidAk; fyf;Fk;NghJ cz;lhFk; xU fiury; mtw;wpd;

Mtp tyaj;Jld; rkepiyapy; ,Uf;Fk;NghJ fiury; tyaj;jpd; rk%y; ,Uf;Fk; re;ju;g;gj;ijf;

fUJf. mg;NghJ mj;njhFjpapd; nkhj;j mKf;fk; 6.5 ×105 Pa vdf; fz;Lgpbf;fg;gl;lJ.

27 °C ,y; fhgd; ,Ury;igl;L> mrw;Nwhd; Mfpatw;wpd; epuk;gy; MtpaKf;fk; KiwNa

5.15 ×105 Pa, 3.35 ×105 Pa MFk;. fhgd; ,Ury;igl;L %yf;$WfSf;fpilNa cs;s ftu;r;rp fc vdTk; mrw;Nwhd; %yf;$WfSf;fpilNa cs;s ftu;r;rp t7pir fa vdTk; fhl;lg;gLk;.

fPNo jug;gl;Ls;stw;wpy; cz;ikf; $w;Wfisj; njupe;njLf;f.

(a) ,f;fiury; ,uNthw;wpd; tpjpapypUe;jhd Neu; tpyfiyf; fhl;Lfpd;wJ.

(b) ,f;fiury; ,uNthw;wpd; tpjpapypUe;jhd kiw tpyfiyf; fhl;Lfpd;wJ.

(c) fc − fc ftu;r;rp tpirfs; > fc − fa ftu;r;rp tpirfs; < fa− fa ftu;r;rp tpirfs;

(d) fc − fc ftu;r;rp tpirfs; < fc − fa ftu;r;rp tpirfs; > fa− fa ftu;r;rp tpirfs;

[gf; 6 Ig; ghu;f;f

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32. gpd;tUk; ve;jf; $w;W / $w;Wfs; cz;ikahdJ / cz;ikahdit?

(a) vy;yhr; Ra nrad;KiwfSf;Fk; ΔS > 0 MFk;.

(b) vy;yhr; Ra nrad;KiwfSf;Fk; ΔH > 0 MFk;.

(c) ΔS > 0 Nghd;w Gwntg;gr; nrad;Kiwfs; Rakhf eilngWfpd;wd.

(d) ΔS < 0 Nghd;w mfntg;gr; nrad;Kiwfs; Rakhf eilngWtjpy;iy.

33. Cu2+

mad; vjd; %yk; / vtw;wpd; %yk; Cu+ Mfj; jho;j;jg;glyhk;?

(a) H2S (b) SO2 (c) KI (d) 2−

C2O4

34. IjNuhf;fhgd;fs; njhlu;ghf cz;ikahd $w;iw / $w;Wfisj; njupe;njLf;f

(a) Xu; mw;fPDld; Xu; HBr %yf;$iwf; $l;Lk;NghJ mw;fPdpd; rpy fhgd; mZf;fspd;

,dq;fyj;jy; NtWgLfpd;wJ. (b) Ngnuhl;irl;L ,Uf;Fk;NghJ CH3 CH = CH2 cld; HBr jhf;fk;GupAk;NghJ gpujhd

tpisnghUshf CH3 CHBrCH3 fpilf;fpd;wJ.

(c) rhjhuz epiyikfspy; vy;yh IjNuhf;fhgd; ,yj;jpuehl;lf; $l;ly; jhf;fq;fs;

eilngWfpd;wd.

(d) Cf;fpahf Hg2+mad;fs; ,Uf;Fk;NghJ vy;yh mw;ifd;fSk; Ijhd H2SO4 cldhd

jhf;fj;jpypUe;J fPw;Nwhd;fisj; jUfpd;wd.

35. C6 H5CHO, CH3CHO fyitia ePu;r; Nrhbak; Ijnuhl;irl;Lld; jhf;fk;Gupar; nra;J gpd;du;

ePufw;wypw;F cl;gLj;Jk;NghJ fyitapy; cz;lhfj;jf;f xLf;fw; $l;ly; tpisnghUs;/ tpisnghUs;fs; ahJ /ahit?

(a) (CH3)2 C = CHCHO (b) C6H5CH = CHCHO (c) CH3CH = CHCHO (d) CH2 = CHCHO

36. 2A + B C vd;Dk; jhf;fk; njhlu;ghd rpy ,af;ftpay; jfty;fs; fPNo jug;gl;Ls;sd.

÷ B apd; nrwpit khwpypahf itj;J khwh ntg;gepiyapy; A apd; nrwpit ,Uklq;fhf;Fk;NghJ

jhf;f tPjk; ehd;F klq;fhFk;.

÷ 25 °C ,y; jhf;fj;jpw;F cupa tPj khwpyp 48 dm6mol−2 MFk;.

Nkw;Fwpj;j jfty;fspypUe;J cupa jhf;fk; njhlu;ghfg; ngwj;jf;f fl;lha KbT / KbTfs;

(a) Xu; mbg;gilj; jhf;fk;

(b) Xu; ,uz;lhk; epiuj; jhf;fk;

(c) B njhlu;ghf Kjy; epiuj; jhf;fk;

(d) 25 °C ,y; A, B Mfpatw;wpd; nrwpTfs; 0.1 mol dm−3Mf ,Uf;Fk;NghJ jhf;fj;jpd; tPjk;

4.8×10−4mol dm−3 s−1MFk;.

37. ,af;ftpirr; rkepiyapy; cs;s gpd;tUk; njhFjpiaf; fUJf.

2A (g) + B (g) 2C (g) ΔH > 0 gpd;tUtdtw;wpy; cz;ikahd $w;W / $w;Wfs; ahJ / ahit?

(a) ntg;gepiyiaf; $l;Lk;NghJ gpd; jhf;f tPjk; Fiwfpd;wJ.

(b) khwh ntg;gepiyapy; A apd; nrwpit ,Uklq;fhf;fp B apd; nrwpit miuthrpahf;Fk;NghJ

rkepiyg; Gs;sp khWtjpy;iy.

(c) khwh ntg;gepiyapy; njhFjpapd; xl;Lnkhj;jkhd fdtsitf; $l;Lk;NghJ C apd; gFjpaKf;fk; mjpfupf;fpd;wJ.

(d) khwh ntg;gepiyapy; A apd; nrwpitf; $l;Lk;NghJ C apd; nrwpT mjpfupf;Fk; mNj

Ntis B apd; nrwpT Fiwfpd;wJ.

[gf; 7 Ig; ghu;f;f

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- 7 - 38. mNdhl;by; xU thAit tpLtpj;jYk; fNjhl;by; cNyhfq;fs; gbjYk; Vw;glj;jf;f kpd;gFg;Gj;

njhlu;ghd rupahd $w;W / $w;Wfs;

(a) rlj;Jt kpd;tha;fisg; gad;gLj;jp xU ePu; CuSO4 fiuriy kpd;gFg;Gr; nra;jy;.

(b) rlj;Jt kpd;tha;fisg; gad;gLj;jp cUfpa NaCl kw;Wk; MgCl2 fyitia kpd;gFg;Gr;

nra;jy;.

(c) mNdhl;lhf Ag Ig; gad;gLj;jp xU ePu; AgNO3 fiuriy kpd;gFg;Gr; nra;jy;.

(d) rlj;Jt kpdtha;fisg; gad;gLj;jp Ijhd Na2 SO4 cs;s xU fiuriy kpd;gFg;Gr; nra;jy;

39. ePupy; fiuahj> Mdhy; nrwpe;j HCl ,y; fiuAk; gjhu;j;jk;

(a) PbCl2 (b) BiOCl (c) Ba(OH)2 (d) CoCl2

40. xU 0.2 mol dm−3 HCl fiurypd; 25.00 cm 3MdJ xU 0.1 mol dm−3 Na2A fiurYld; epakpg;Gr;

nra;ag;gLfpd;wJ. ,e;epakpg;G njhlu;ghfj; jug;gl;Ls;s $w;Wfspy; cz;ikahdJ ^H2A vd;gJ Xu; cWjpahd ,U%y nky;ykpykhf ,Uf;Fk; mNj Ntis pKa1= 5, pKa2= 10 MFk;).

(a) xU rktY epiy khj;jpuk; fpilf;fpd;wJ.

(b) Na2 A + H2A 2NaHA vd;Dk; jhf;fKk; eilngWfpd;wJ.

(c) Na2 A 12.50 cm 3Nru;f;fg;gl;Ls;s re;ju;g;gj;jpy; epakpg;Gf; FLitapy cs;s fiuriy H2A

,dJk; HCl ,dJk; xU fyitahff; fUjyhk;.

(d) rktY epiyiaj; Jzptjw;Fg; gpNdhj;jyPd; fhl;biag; gad;gLj;j KbahJ.

41 njhlf;fk; 50 tiuAs;s tpdhf;fs; xt;nthd;wpYk; ,uz;L $w;Wfs; jug;gl;Ls;sd.

ml;ltizapy; cs;s (1), (2), (3), (4), (5) Mfpa njupTfspypUe;J xt;nthU tpdhTf;Fk;

jug;gl;Ls;s ,U $w;WfSf;Fk; kpfTk; rpwg;ghfg; nghUe;Jk; njupitj; njupe;J nghUj;jkhf

tpilj;jhspw; Fwpg;gpLf.

njupT Kjyhk; $w;W ,uz;lhk; $w;W

(1)(2)(3)(4)(5)

cz;ik

cz;ik

cz;ik

ngha;

ngha;

cz;ikahf ,Ue;J Kjyhk; $w;Wf;Fj; jpUj;jkhd tpsf;fk; jUtJ

cz;ikahf ,Ue;J Kjyhk; $w;Wf;Fj; jpUj;jkhd tpsf;fj;ijj; juhjJ

ngha;

cz;ik

ngha;

Kjyhk; $w;W ,uz;lhk; $w;W

41. xU nrwpe;j HCl fiurYld; MnO2

Ir; Nru;f;Fk;NghJ FNshuPd; thA

ntsptUfpd;wJ.

HCl MdJ Xu; xl;rpNaw;wpahfj;

jhf;fyhk;.

42. ntg;gepiy mjpfupf;Fk;NghJ xU thAtpd;

neUf;fw; fhuzp mjpfupf;fpd;wJ.

ntg;gepiy mjpfupf;Fk;NghJ xU nghUspd;

khWepiy ntg;gepiy mjpfupf;fpd;wJ.

43. rt;Tf; fy Kiwapdhy; NaOH I cw;gj;jp

nra;Ak;NghJ fyj;Jld; ePiuAk; Nru;j;jy;

Ntz;Lk;.

rt;Tf; fy Kiwapdhy; NaOH I cw;gj;jp nra;Ak;NghJ ePUk; xU

jhf;fpahFk;.

44. FNshNuh ngd;rPd; NaOH(aq) cld;

jhf;fk;GupAk;.

OH− MdJ kpfr; rpwe;j fUehbahFk;.

45. s njhFjpapd; %yfq;fisg;

gpupj;njLf;fj;jf;f xNu Kiw mtw;wpd;

cUfpa FNshiul;il kpd;gFg;Gr;

nra;jyhFk;.

Xu; NaCl fiuriy kpd;gFg;Gr;

nra;Ak;NghJ fNjhl;bypUe;J Na+

ck; mNdhl;bypUe;J Cl− ck;

nrytplg;gLfpd;wd.

[gf; 8 Ig; ghu;f;f

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Kjyhk; $w;W ,uz;lhk; $w;W

46. CH3 CH = CH2 mkpyg; nghw;whrpak;

Ngu;kq;fNdw;Wld; ,sQ;#lhf;Fk;NghJ

CO2 thA ntsptUfpd;wJ.

KMnO4 %yk; Nrjdr; Nru;itfis

xl;rpNaw;Wk;NghJ xt;nthU

jlitAk; fhgdpd; cau;e;jgl;r

xl;rpNaw;wf; Fwpg;gPl;bypUe;J ngwg;gLk;

tpisnghUs;fs; fpilf;fpd;wd.

47. pH ngWkhdk; 11 MfTs;s xU ePu;

mNkhdpahf; fiury; khwh ntg;gepiyapy;

E}W klq;F ePupdhy; Ijhf;Fk;NghJ pH ngWkhdk; Vwj;jho 12 MFk;.

xU nkd; %yj;ij ePupdhy;

Ijhf;Fk;NghJ mjd; $l;lg;gpupT msT

mjpfupf;fpd;wJ.

48. ve;jf; FNshiul;ilAk; ePu;g;gFg;Gr; nra;Ak;

NghJ fpilf;Fk; fiury; %ykd;W.ePu;f; fiurypy; HCl MdJ typikahd

mkpykhFk;.

49. vjndhapf; mkpyj;jpdhYk; mjd; Nrhbak;

cg;gpdhYk; cz;lhf;fg;gLk; xU jhq;fw;

fiurypd; pH ngWkhdk; [cg;G]/ [mkpyk;] vd;Dk; tpfpjj;jpd; ngWkhdj;jpw;F

tpfpjrkkhFk;.

xU jhq;fw; fiuriy Ijhf;Fk;NghJ

mjd; pH ngWkhdk; fzprkhd

mstpdhy; khWtjpy;iy.

50. N`gu; Kiwapdhy; NH3 I cw;gj;jp nra;Ak;

NghJ fpilf;Fk; rkepiyg;gl;l thAf;

fyitapdhy; NH3 I NtWgLj;Jtjw;Fj;

njhFjp Fspr;rpahf;fg;gLfpd;wJ.

thAf;fs; ePupw; fiujy;

Gwntg;gj;jpw;FupajhFk;.

* * *

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mfpy thAkhwpyp R = 8.314JK-1 mol -1 mtfhjNuh khwpyp NA = 6.022 x 10 23 mol -1

gFjp A - mikg;Gf; fl;Liu

ehd;F tpdhf;fSf;Fk; ,j;jhspNyNa tpil vOJf. (xt;nthU tpdhtpd; tpilf;FKupa Gs;sp 10 MFk;)

1. (a) (i) njhlf;fk; (v) tiuAs;s gFjpfspy; ,Uf;Fk; ntw;wplq;fis cfe;jthW epug;Gf.

(i) He, O, Mg, Cl Mfpatw;wpd; mZthiuapd; rupahd VWtupir KiwNa

''''''''''''''''''' < '''''''''''''''' < '''''''''''''''' < '''''''''''''''' (ii) Li, Be, Ne Mfpatw;wpy; ,uz;lhtJ madhf;f ntg;gTs;Siw '''''''''''''''''''''''''''' ,w;F

cau;e;jgl;rkhFk;.

(iii) iejurd;> FNshuPd;> Mfd; vd;Dk; thAf;fspy; nfhjpepiy ''''''''''''''''''''''''' ,w;F

cau;e;jgl;rkhFk;.

(iv) CO, CO2 , CH4 Mfpatw;iwf; fUJk;NghJ '''''''''''''''' < '''''''''''''''' < '''''''''''''''' vd;Dk;

xOq;FKiwapy; fhgdpd; kpd;vjpupay;G mjpfupf;fpd;wJ.

(v) NO2

+ , NO2

− , NO3

− Mfpatw;wpy; '''''''''''''''' < '''''''''''''''' < '''''''''''''''' vd;Dk; xOq;FKiwapy;

mtw;wpd; N − O gpizg;G ePsk; mjpfupf;fpd;wJ. (2.0 Gs;spfs;)

(b) CNO3

+vd;Dk; fw;wad; Ngjj;jpd; mZ td;$L fPNo jug;gl;Ls;sJ.

Oa C N Ob

Oc

,e;j madpw;F tiuaj;jf;f Xu; cY}apf; fl;likg;gpw;Fupa rpy jfty;fs; gpd;tUk; ml;ltizapy;

fhl;lg;gl;Ls;sd.

mZ fyg;gpdthf;fk;

Oa

Ob

Oc

CN

sp sp3

sp2

sp sp 2

ftdpf;f:

* gFjp A apy; vy;yh tpdhf;fSf;Fk; tpil vOJf.

* gFjp B apy; ,U tpdhf;fs; tPjKk; gFjp C apy; ,U tpdhf;fs; tPjKk; njupe;njLj;J ehd;F

tpdhf;fSf;F tpil vOJf.

%d;W kzpj;jpahyk;

f.ngh.j. (c.juk;) cjtpf; fUj;juq;F - 2014

,urhadtpay; II

[gf; 2 Ig; ghu;f;f

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- 2 - (i) CNO3

+,w;F Nkw;Fwpj;j ml;ltizapy; fhzg;gLk; jfty;fSf;Fg; nghUj;jkhd

cY}apf; fl;likg;ig tiuf.

(ii) Nkw;Fwpj;j madpw;F ,Uf;ff;$ba gupTf; fl;likg;Gfis tiuf. ,f;fl;likg;Gfspd;

cWjpg;ghLfisf; fhuzq;fspd; %yk; jUf.

(iii) ,f;fw;wad; Ngjk; rpy epiyikfspd; fPo; NO2

+ MfTk; xU thAr; Nru;itahfTk;

gpupifailfpd;wJ. ,t;thAr; Nru;it ahjhf ,Uf;fyhk;?

(4.0 Gs;spfs;)

(c)

H Na COa Nb Ob

Nkw;Fwpj;j fl;likg;igf; fUj;jpw;nfhz;L jug;gl;Ls;s ml;ltiziag; g+uzg;gLj;Jf.

mZ fyg;gpdthf;fk; mZitr; Rw;wpAs;s

,yj;jpud; Nrhbf;

Nfj;jpufzpjk;

Oa

Na

C

(2.0 Gs;spfs;)

(d) gpd;tUk; mtjhdpg;GfSf;Fupa fhuzq;fis tpsf;Ff.

(gpujhd fhuzj;ij khj;jpuk; fUjpdhy; NghJk;)

(i) Zn ,d; cUFepiy Co ,d; cUFepiyapYk; ghu;f;ff; Fiwe;jJ.

(ii) CH3 COOH ,d; nfhjpepiy CH3 CH2CHO ,d; nfhjpepiyapYk; ghu;f;ff; $baJ.

(2.0 Gs;spfs;)

[gf; 3 Ig; ghu;f;f

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- 3 - 2. (a) A, B Mfpad Mtu;j;jd ml;ltizapd; xNu Mtu;j;jdj;jpd; 2 mLj;Js;s %yfq;fshFk;.

B apd; Kjyhk; madhf;fr; rf;jp A apd; mg;ngWkhdj;jpYk; $baJ. B apd; Xu; cg;G

Rthiyr; Nrhjidf;F tpNrl epwj;ijf; fhl;Ltjpy;iy. A MdJ Fspu; ePUld; tpiuthfj;

jhf;fk;Gupe;J fiury; C iaAk; xU thA D iaAk; jUfpd;wJ. %yfk; B MdJ

nfhjpePuhtpAld; jhf;fk;Gupe;J Nru;it E iaAk; thA D iaAk; tpLtpf;fpd;wJ.

(i) A , B Mfpa %yfq;fis ,dq;fhz;f.

A ................................................. B .................................................

(ii) fiury; C iaAk; Nru;it E iaAk; ,dq;fhz;f.

C ................................................. E .................................................

(iii) thA D ahjhf ,Uf;fyhk;? '''''''''''''''''''''''''''''''''''''''''''''''

(iv) kpifahd xl;rprd; thA ,Uf;Fk;NghJ A apy; eilngwj;jf;f ,urhad khw;wq;fSf;fhd

rkd;gLj;jpa ,urhadr; rkd;ghLfis vOJf.

(v) B MdJ Ijhd ry;g+upf;fkpyj;JlDk; nrwpe;j ry;g+upf;fkpyj;JlDk; ve;epiyikfspd;

fPo; vq;qdk; jhf;fk;Gupfpd;wJ vd;gijr; rkd;gLj;jpa ,urhadr; rkd;ghLfisf;

nfhz;L vLj;Jiuf;f.

(vi) NkNy (iv) ,y; Fwpg;gplg;gl;l A apd; %yk; cz;lhf;fg;gLk; tpisnghUs;fis ePupy;

fiuj;Jg; ngwg;gLk; Ijhd fiurypD}lhff; FNshuPd; thA kpifahff; Fkpopaplr;

nra;ag;gl;lJ. ,q;F cz;lhFk; tpisnghUs;fis ,dq;fhz;f.

(vii) A , B Mfpad ,Uf;Fk; Mtu;j;jdj;jpd; %yfq;fs; cz;lhf;Fk; Ijnuhl;irl;Lfisf;

Fwpg;gpl;L> gpd;tUk; gl;baiyg; gad;gLj;jp> mtw;wpd; mkpy ,ay;G / %y ,ay;G / <upay;G gw;wpa fUj;Jfisf; fhl;Lf.

(kpf typikahd mkpy> typikahd mkpy> eype;j mkpy> kpf eype;j mkpy> %y>

typikahd %y> <upay;G)

(5.5 Gs;spfs;)

(b) xU jhz;ly; cNyhf %yfk; X ,y; 3 Nrhbaw;w ,yj;jpud;fs; ,Uf;Fk; mNj Ntis xU

ePu; Clfj;jpy; Xn+ mad; ,sQ;rptg;G epwj;ijf; fhl;Lfpd;wJ.

(i) %yfk; X ,id ,dq;fhz;f.

(ii) X ,d; ,yj;jpud; epiyaikg;ig vOJf.

[gf; 4 Ig; ghu;f;f

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(iii) X ,d; cWjpahd xl;rpNaw;w vz;zpypUe;J ngwg;gLk; 2 xl;irl;Lifsf; Fwpg;gpLf.

(iv) Xn+ ePu; Clfj;jpy; ,sQ;rptg;G epwj;ijf; fhl;Lk; rpf;fyadpd; #j;jpuj;ij vOJf.

(v) Xn+ If; nfhz;l xU ePu;f; fiurYld; Ijhd NH4OH Ij; Jspahfr; Nru;f;Fk;NghJ

xU ePy epw tPo;gbT fpilf;Fk; mNjNtis xU kpif NH3 fiurYld; xU kQ;rl;

fgpy epwf; fiuriyj; jUfpd;wJ.

(a) ,q;F Fwpg;gplg;gLk; epwq;fSf;Fupa Nru;itfs; ahit?

(b) epw khw;wq;fSf;Fupa rkd;gLj;jpa ,urhadr; rkd;ghl;il vOJf.

(vi) NkNy (v) ,y; Fwpg;gpl;l kQ;rl; fgpyr; rpf;fy; mlq;fpa fiurypD}lhf H2O2 If;

Fkpopaplr; nra;jNghJ vd;d mtjhdpf;fg;gLk;? mjw;Ff; fhuzk; ahJ?

(4.5 Gs;spfs;)

3. (a) khwh mKf;fj;jpYk; ntg;gepiy T apYk; FWf;Fntl;Lg; gug;gsT A MfTk; ePsk; l MfTk;

cs;s xU tpiwj;j milj;j ghj;jpuj;jpy; He, Ne vd;Dk; ,U thAf;fs; cs;sd.

(i) mr;re;ju;g;gj;jpy; njhFjpapd; nkhj;j mKf;fk; P1 Mf ,Uf;Fk; mNj Ntis %y;fspd;

nkhj;j vz;zpf;if nT ,w;Fupa xU Nfhitiag; ngWf.

(ii) tpiwj;j ghj;jpuj;jpd; ntg;gepiyia ,Uklq;fhf;Fk;NghJ Gjpa mKf;fk; P2 MFk;.

fdtstpy; khw;wk; Vw;glhnjdpd;> P2 ,w;Fupa xU Nfhitia P1 ,d; rhu;gpw; ngWf.

[gf; 5 Ig; ghu;f;f

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(iii) Nkw;Fwpj;j xt;nthU ntg;gepiyapYk; xU thA (He, Ne) ,w;F Nghy;w;khd; guk;gy; tiugpid tiuf.

xU Fwpj;j

rf;jpiaf; nfhz;l

cggpd;dk;

fjp / m s-1

(4.0 Gs;spfs;)

(b) A, B, C vd;gd xd;Nwhnlhd;W fyf;Fk; %d;W Mtpg;gwg;Gs;s jputq;fshFk;. xt;nthU

$wpdJk; gFjpaKf;fq;fSk; epuk;gyhtp mKf;fq;fSk; KiwNa PA, PB, PC, P°A, P°

B, P°C

MFk;. jput mtj;ijapy; A, B, C Mfpa $Wfspd; %y; gpd;dq;fs; KiwNa xA, xB, xC MFk;.

xt;nthU fye;j fiurypd; $wpdJk; Mtpg;gwg;Gj; jd;ik A > B > C vd khWfpd;wJ.

fyitfspy; %yf;$WfSf;fpilNa cs;s

ftu;r;rp tpirfs;

A − AB − B A - B,

A − C vd khWfpd;wd. A − AC − C

A iaAk; B iaAk;> A iaAk; CiaAk; NtWNtwhf 1.0 mol tPjk; vLj;J ,U milj;j

ghj;jpuj;jpy; fye;J rkepiyia mila tplg;gl;lJ.

(i) P°A, P°B, P°C Mfpatw;iwg; gpd;tUk; tupg;glq;fspy; cupa mr;Rfspy; Fwpf;f.

(ii) PA, PB, PC mikg;Gld; eilngWk; khwiy mt;tupg;glq;fspy; tiuf.

(iii) A, B fyitapd; Mtp mtj;ijapd; nkhj;j mKf;fk; (PAB) ,d; khwiy cupa cUtpy;

tiuf.

(iv) A, C fyitapd; Mtp mtj;ijapd; nkhj;j mKf;fk; (PAC) ,d; khwiy cupa cUtpy;

tiuf.

(v) gpd;tUk; ntw;wplq;fis epug;Gf.

fyit AB MdJ ,yl;rpa epiyapypUe;J '''''''''''''''''''''''''' tpyfiyf; fhl;Lk; mNj Ntis

fyit AC MdJ ,yl;rpa epiyapypUe;J '''''''''''''''''''''''''' tpyfiyf; fhl;Lfpd;wJ.

Mtp

mKf;fk;

xA

xB 1 1 010 0 10

Mtp

mKf;fk;

Mtp

mKf;fk;

Mtp

mKf;fk;

xC

xAcU ^1& cU ^2&

(6.0 Gs;spfs;)

[gf; 6 Ig; ghu;f;f

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4. (a) A, B, C Mfpad C4 H11 N vd;Dk; %yf;$w;Wr; #j;jpuKs;s xd;W kw;iwajd; rkgFjpakhd

%d;W Kjd;ik mikd;fshFk;. ,r;Nru;itfs; NaNO2 clDk; Ijhd ePu; HCl clDk;

jhf;fk;Gupar; nra;ag;gl;ld. mg;NghJ KiwNa D, E, F vd;Dk; tpisnghUs;fisj; je;jd.

F MdJ Pyridinium Chlorochromate (PCC) cld; jhf;fk;Guptjpy;iy.

(i) C, F Mfpatw;wpd; fl;likg;Gfisf; fPNo jug;gl;Ls;s milg;Gfspy; tiuf.

C F

(ii) D, E Mfpad PCC cld; jhf;fk;Gupe;J KiwNa x, y Mfpatw;iwj; jUfpd;wd. y MdJ Ngypq;fpd; Nrhjidg; nghUSf;F tpil jUtjpy;iy. B, E, y Mfpatw;wpd;

fl;likg;Gfis vOJf.

B E Y

(iii) A apw;F ,Uf;fj;jf;f fl;likg;Gfisg; gpd;tUk; milg;Gfspy; vOJf.

(iv) D iar; nrwpe;j H2SO4 cld; ntg;gkhf;Fk;NghJ fpilf;Fk; tpisnghUis ePu; H2SO4

cld; njhopw;gl tpLk;NghJ F fpilf;fpd;wJ. A, D, X Mfpatw;wpd; fl;likg;Gfisg;

gpd;tUk; mikg;Gfspy; tiuf.

A D X

A D X (b) gpd;tUk; jhf;fq;fspd; xOq;fikg;igf; fUJf.

jhf;fk; (2)

CH2COCl CH2COOCH3

H2O

(X)

(P)(Q)(R)(S)jhf;fk; (3)

nrwpe;j

H2SO4

kpif

CH3MgBr

Br2

jhf;fk; (1)(i) X Nrhjidg; nghUs; ahJ?

[gf; 7 Ig; ghu;f;f

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- 7 -

(ii) P, Q, R, S vd;Dk; tpisnghUs;fis vOJf.

P Q R S

(iii) NkNy 1 - 3 tiuf;Fk; jug;gl;Ls;s jhf;fq;fisf; fUJf. mj;jhf;fq;fs; xt;nthd;Wf;Fk;

fUehl;lf; $l;ly; (AN), fUehl;lg; gpujpaPL (SN), ,yj;jpuehl;lf; $l;ly; (AE), ,yj;jpuehl;lg; gpujpaPL (SE), ntspNawy; (E) my;yJ NtW jhf;fq;fs; (O) vd;Dk; ,tw;wpy;

vt;tiff;Fupanjdf; fhl;Lf.

jhf;fk; jhf;f tif

1.

2.

3.

.............................................

.............................................

.............................................

(3.4 Gs;spfs;)

(c) (i) (CH3)3 CBr vd;Dk; mw;ifapy; Viyl;Lld; Xu; Ijhd NaOH fiuriyr; Nru;f;Fk;NghJ

eilngWk; jhf;fk; ,U gbKiwfspy; eilngWfpd;wJ. Nkw;Fwpj;j jhf;fj;jpw;Fupa

nghwpEl;gj;jpd; gbKiwfis vOJf.

(ii) Ijhd NaOH ,d; Kd;dpiyapy; CH3CH2Br cld; eilngWk; jhf;fk; xU jdpg;

gbKiwapy; eilngWfpd;wJ. ,jw;Fupa fhuzj;ij NkNy (i) ,y; cs;s jhf;fj;Jld;

xg;gpl;L tpsf;Ff.

(2.6 Gs;spfs;)

* *

[gf; 8 Ig; ghu;f;f

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- 8 -

gFjp B - fl;Liu tpdhf;fs;

,uz;L tpdhf;fSf;F khj;jpuk; tpil vOJf. (xt;nthU tpdhtpd; tpilf;FKupa Gs;spfs; 15 MFk;)

5. (a) ntg;gepiy 700 K ,y; fdtsT 2.5 dm3 I cila Xu; milj;j tpiwg;ghd ghj;jpuj;jpy; thA

X2 ,d; 0.15 mol cs;sJ. mg;ghj;jpuj;jpDs;Ns ,Wjp mKf;fk; 8.5 × 105 Nm−2 Mf ,Uf;Fk;

tiuf;Fk; H2 thA GFj;jg;gl;lJ. ,q;F ntg;gepiy my;yJ fdtsT khw;wk; Vw;gLtjpy;iy.

milj;j ghj;jpuj;jpDs;Ns Xu; Cf;fpiag; GFj;jpa gpd;du; X2(g)+ 2H2(g) 2H2X(g) rkepiy milag;gl;lJ. rkepiyj; njhFjpapd; H2X(g) 0.08 mol cz;lhf;fg;gl;lJ.

(i) rkepiyf;F Kd; X2 ,d; gFjpaKf;fj;ijf; fzpf;f.

(ii) rkepiy epiyapy; njhFjpapd; %y;fspd; nkhj;j vz;zpf;ifiaf; fhz;f.

(iii) njhFjpf;Fs;Ns GFj;jg;gl;l H2 %y;fspd; vz;zpf;if ahJ?

(iv) Nkw;Fwpj;j Kp , Kc Nfhitfis vOJf.

(v) 700 K ,y; Kc, Kp Mfpatw;wpd; ngWkhdq;fisf; fzpf;Ff.

(6.0 Gs;spfs;)

(b) ahjhapDk; xU ePu;f; fiurypy; H2O(l) H+(aq) + OH

−(aq) vd;Dk; rkepiy

,Uf;fpd;wJ.

(i) ePupd; mad; ngUf;fk; Kw ,w;fhd xU Nfhitia vOJf.

(ii) ahjhapDk; xU ePu;f; fiurYf;F pH + pOH = pKw vdf; fhl;Lf.

(iii) ePu;f; fiurypy; BOH MdJ Xu; Xukpy nkd; %ykhFk;. nrwpT C mol dm−3 MfTs;s

xU BOH fiurypd; 25 °C ,y; pH ngWkhdk; pH = 14 − 12 pKb + 12 log C ,dhy;

jug;gLfpwnjdg; ngWf@ ,q;F Kb MdJ BOH ,d; %y madhf;f khwpypahFk;.

(iv) 25 °C ,y; nrwpT 0.1mol dm−3 BOH fiury; xd;wpd; pH ngWkhdj;ijf; fzpf;f.

^BOH ,y; Kb = 1 × 10−5 mol dm−3&

(v) BOH MdJ HCl cld; jhf;fk;GupAk;NghJ fpilf;Fk; cg;G BCl MFk;. nrwpT

C1 mol dm−3 MfTs;s BCl fiurypd; Xu; 25.00 cm3 fdtsTld; nrwpT C2 mol dm−3

MfTs;s NaOH fiurypd; fdtsT 25.00 cm3 I (kpifahf) Nru;g;gjd; %yk; fiury;

X jahupf;fg;gl;Ls;sJ. fiury; X ,y; miuthrpia xU epakpg;Gf; FLitapy; vLj;Jf;

fhl;bahf nkjapw; nrk;kQ;risg; gpuNahfpj;J xU 0.1 mol dm−3 HCl fiurYld; epakpg;Gr;

nra;ag;gl;lJ. mg;NghJ fpilj;j mstp thrpg;G 35.00 cm3 MFk;.

NkNy tptupj;j vy;yhj; jhf;fq;fSf;Fk; cupa rkd;gLj;jpa ,urhadr; rkd;ghl;il

vOJf.

(vi) fiury; X ,d; vQ;rpa gFjpiaAk; xU epakpg;Gf; FLitapy; vLj;Jf; fhl;bahfg;

gpNdhj;jyPidg; gad;gLj;jp> 0.1 mol dm−3 HCl fiurYld; epakpg;Gr; nra;jNghJ fpilj;j

mstp thrpg;G 15.00 cm3MFk;.

(I) NkNy (v), (vi) Mfpa epakpg;Gfspy; FLitapy; cs;s fiurypd; pH ngWkhdk; Nru;f;fg;gl;l HCl fdtsTld; khWk; tpjj;ij xNu tiugpy; Fwpf;Ff. ckJ tiugpy;

gpNdhj;jyPd;> nkjapw; nrk;kQ;rs; Mfpa fhl;bfspd; gUk;gb pH tPr;RfisAk;

mstp thrpg;GfisAk; Fwpf;f.

(II) C1, C2 Mfpa ngWkhdq;fisf; fzpf;f. (9.0 Gs;spfs;)

[gf; 9 Ig; ghu;f;f

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6. (a) (i) fiujpwd; ngUf;fk; vd;gJ ePupy; rpwpjstpy; fiuAk; td; kpd;gFnghUs;fSf;Fg;

gpuNahfpf;fg;glyhk;.

I. td; kpd;gFnghUs; vd;gJ ahJ?

II. NaCl Nghd;w ePupy; kpf ed;whff; fiuAk; Nru;itfSf;Ff; \fiujpwd; ngUf;fk|;

nry;Ygbahtjpy;iy. tpsf;Ff.

(ii) Ag2CrO4 jpz;kj;jpy; xU Fwpj;j jpzpit (kpifahf)j; jug;gl;l xU ePu;f; fdtsTld;

Nru;j;J ed;whff; fyf;fg;gLfpd;wJ. xU Fwpj;j Neuj;jpw;Fg; gpd;du; fiurypd; xt;Nthu;

maDk; nrwptpy; khwhjjhFk;. ,j;njhFjpAld; xU nrwpe;j NH3 fiuriyr; Nru;f;Fk;

NghJ fiurypd; kQ;rs; epwk; mjpfupf;fpd;wJ. ,urhadr; rkepiyapd; mbg;gilf;

Nfhl;ghLfisf; nfhz;L Nkw;Fwpj;j tplaq;fis tpsf;Ff.

(iii) 27 °C ,y; Ag2 CrO4 ,d; %yu;f; fiujpwd; 1 × 10−4mol dm−3 MFk;. mt;ntg;gepiyapy;

Ag2CrO4 ,d; fiujpwd; ngUf;fj;ijf; fzpf;f.

(iv) Ag2CrO4 jpz;kj;ijf; fiuj;Jr; nra;ag;gl;l epuk;gpa ePu;f; fiurypd; Xu; 250.00 cm3

fdtsTld; nrwpT 2.0 mol dm−3MfTs;s Na2CrO4 fiurypd; 250.00 cm3 Nru;f;fg;gl;lJ.

27 °C ,y; tPo;gbthFk; Ag2CrO4 %y;fspd; vz;zpf;if ahJ?

(v) NkNy (iv) ,y; tPo;gbT cz;lhfhjthW mf;fiurypy; fiuf;fg;gl Ntz;ba Fiwe;jgl;r

NH3 %y;fspd; vz;zpf;if ahJ? ,f;fzpg;gpy; ePu; gad;gLj;Jk; vLNfhs;fisf;

Fwpg;gpLf.

Ag+(aq) + 2NH3(aq) [Ag(NH3)2]+(aq)

Nkw;Fwpj;j jhf;fj;jpd; rkepiy khwpyp Kc = 1.0 × 108 dm6mol−2

(9.0 Gs;spfs;)

(b) X, Y Mfpad KiwNa xUtYf; fw;wad;fisAk; ,UtYf; fw;wad;fisAk; cz;lhf;Fk; ,U

%yfq;fshFk;. 25 °C ,y; mtw;wpd; ntg;gtpurhadj; juTfs; fPNo jug;gl;Ls;sd.

,urhad ,dk; X(s) Y(s) X+

(aq) Y2+

(aq)

epak %yu; ntg;gTs;Siw / kJ mol−1 0 0 105 −89

epak %yu; ve;jpug;gp / J K-1 mol−1 42 27 72 −137

2X(s) + Y2+ 2X+ + Y(s)(aq) (aq)

(i) 25 °C ,y; Nkw;Fwpj;j jhf;fj;jpw;F I ∆Hθ If; fzpf;f.

II ∆SθIf; fzpf;f.

III ∆Gθ If; fzpf;f.

(ii) gpd;tUk; xt;nthU kpd;thapYk; kpd;dpurhadj; njhlupy; Ijurd; njhlu;ghf ,Uf;Fk;

jhdj;ijf; Fwpg;gpLf. ePu; tpilia mile;Js;s tpjj;ij tpsf;fpf; fhl;Lf.

X(aq)

+ + e X (s)

Y2+

(aq) + 2e Y (s)

(iii) mt;tpU kpd;tha;fisAk; gad;gLj;jp mikf;Fk; xU fyj;jpd;

I mNdhl;ilAk; fNjhl;ilAk; Fwpg;gpLf.

II mNdhl;Lj; jhf;fj;ij vOJf.

III fNjhl;Lj; jhf;fj;ij vOJf.

IV Nkw;Fwpj;j fyj;ij epak tbtj;jpy; fhl;Lf. (6.0 Gs;spfs;)

- 9 -

[gf; 10 Ig; ghu;f;f

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7. (a) (i) C ≡ C − H

vd;Dk; Nru;it Na cld; epfo;j;Jk; jhf;fj;jpw;Fupa rkd;gLj;jpa rkd;ghl;il

vOJf.

(ii) Nkw;Fwpj;j jhf;fj;jpy; cz;lhf;Fk; cg;G xU fUehbahfr; nraw;glyhk;. fhgidw;

Nru;itfSf;Fk; fpwpdhl; Nrhjidg; nghUSf;FkpilNa eilngWk; jhf;fq;fs; gw;wpa

ckJ mwpitg; gad;gLj;jp NkNy a (i) ,y; cz;lhFk; cg;ghdJ CH3CHO cld;

epfo;j;Jk; jhf;fj;ij vOJf.

(iii) xNu Nrjdr; Nru;itahf

C ≡ C − H

Ig; gad;gLj;jpg; gpd;tUk; Nru;itia 6 ,w;Ff;

Fiwe;j gbKiwfshfg; gFg;gha;T nra;Ak; tpjj;ijf; fhl;Lf.

C C C

CH3 Br Br

Br Br Br

(7.5 Gs;spfs;)

(b)

CH2

CHCH

Cl

ClH(a) (b) (d)

(f)

H (h) H(g)

(e)

O

C(c)

(i) Nkw;Fwpj;j Nru;itapy; a njhlf;fk; h tiuf;Fk; ngauplg;gl;Ls;s jhdq;fSld; OH

−

jhf;fj;jpNy vj;jhdq;fspy; Xu; cWjpahd tpisnghUs;fisj; jUk;?

(ii) NkNy (i) ,y; Fwpg;gpl;l> cWjpahd tpisnghUisj; jUk;NghJ OH− vt;tifj; jhf;fj;ijg;

GupAnkdf; Fwpg;gpLf. (2.5 Gs;spfs;)

(c) (i) Nrjdr; Nru;it A ia khj;jpuk; gad;gLj;jpr; Nrjdr; Nru;it B njhFg;Gr; nra;ag;gLk; tpjj;ijf; fhl;Lf. (ckJ njhFg;ig 6 gbKiwfSf;F kl;Lg;gLj;Jf.)

NH2O

O

C

A B

(ii) Nru;it N

H OC Ig; gad;gLj;Jtjd; %yk; xU J}a COOH khjpupg;

nghUis vq;qdk; gupNrhjid Kiwahfg; ngwyhnkdf; fhl;Lf.

(5.0 Gs;spfs;)

- 10 -

[gf; 11 Ig; ghu;f;f

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gFjp C - fl;Liu tpdhf;fs;

,uz;L tpdhf;fSf;F khj;jpuk; tpil vOJf. (xt;nthU tpdhtpd; tpilf;FKupa Gs;spfs; 15 MFk;)

8. (a) (i) ,U vspa mad; Nru;itfs; cs;s xU Fwpj;j epwj; jpz;kf; fyitapy; ePiu ,l;L

ntg;gkhf;Fk;NghJ xU epwkw;w fiurYk; ,sQ;rptg;G epwKs;s xU tPo;gbTk; fpilj;jd.

,t;ntg;gf; fiuriy tbfl;b> NtWgLj;jp> Fspu;r;rpahf;Fk; NghJ fLk; kQ;rs; epwKs;s

xU tPo;gbT fpilj;jJ. Nkw;Fwpj;j ,sQ;rptg;G epwKs;s tPo;gbT nrwpe;j HCl ,y; fiue;J xU ePyepwf; fiuriyj; jUfpd;wJ. fhuzq;fs; je;J njhlf;fj; jpz;kf;

fiurypy; cs;s $Wfis ,dq;fhz;f.

(ii) Nkw;Fwpj;j ePy epwKs;s Ngjj;jpd; #j;jpuj;ij vOjp IUPAC ngaiuAk; vOJf.

(3.0 Gs;spfs;)

(b) xU ePu;f; fiury; X ,d; ehd;F mdad;fs; mtw;wpy; Nrhbak; cg;Gfshf mlq;fpAs;sd.

,e;ehd;F mdad;fisAk; ,dq;fhz;gjw;Fr; nra;ag;gl;l rpy Nrhjidfs; fPNo

fhzg;gLfpd;wd.

(i) rpwpjsT X cld; kpifahf <a mrw;Nww;Wf; fiuriyr; Nru;f;Fk;NghJ xU ntz;zpw

tPo;gbT fpilj;j mNj Ntis mjid NtWgLj;jp ntg;gkhf;Fk;NghJ mJ fWg;G

epwkhf khwpaJ.

(ii) NkNy (i) ,y; ngw;w tbjputj;Jld; Xu; NaCl fiuriyr; Nru;j;J vQ;rpAs;s Pb2+

mad;fs; vy;yhk; PbCl2 vd tPo;gbthf;fp mfw;wg;gl;ld. fpilf;Fk; tbjputk; (Y) MdJ

Xu; mkpy KMnO4fiuriy epwk;ePf;Fk; Mw;wiyf; nfhz;Ls;sJ. vdpDk;> tbjputk; Y cld; kpifahd CaCl2 fiuriyr; Nru;j;j gpd;du; fpilf;Fk; tPo;gbit tbfl;Lk;NghJ

fpilf;Fk; tbjputk; Z MdJ mkpy KMnO4 I epwk;ePf;f ,ayhjjhFk;.

(iii) tbjputk; Z If; nfhjpf;f itf;Fk;NghJ xU ntz;zpw tPo;gbT fpilf;fpd;wJ.

(iv) NkNy ̂ iii& ,y; ngw;w tbjputj;Jld; NaOH IAk; Al J}isAk; Nru;j;J ntg;gkhf;Fk;NghJ

NH3 ntsptUfpd;wJ.

Nkw;Fwpj;j xt;nthU NrhjidapypUe;Jk; ngwj;jf;f KbGfisf; Fwpg;gpl;L> fiury; X ,y;

cs;s ehd;F mdad;fisAk; ,dq;fhz;f.

(5.0 Gs;spfs;)

(c) fiury; Q ,y; Fe3+, Cl−, H+

mad;fs; cs;sd. mtw;wpd; nrwpTfisf; fhz;gjw;Fg; gpd;tUk;

Kiwapay;fs; (A, B, C) gpd;gw;wg;gl;ld. (A) fiury; Q tpd; 25.00 cm3

cld; xU kpifahd AgNO3 fiuriyr; Nru;j;jNghJ fpilj;j

tPo;gbtpd; cyu; mlu;j;jp 0.287 g MFk;.

fiury; Q ,y; cs;s Cl− nrwpit mol dm−3 ,w; fzpf;f.

(rh.m.jp Ag - 108, Cl - 35.5)

(B) fiury; Q ,y; 25.00 cm3 I vLj;J> mjpy; cs;s Fe3+

mad;fis Kw;whf FeS Mf

tPo;gbthf;Ftjw;Fg; NghjpathW H2S Fkpopaplr; nra;ag;gl;lJ. ,q;F cz;lhFk;

fe;jfk; mlq;fpa xU tpisnghUshfpa FeS ck; tPo;gbT S ck; tbfl;lg;gl;L tbjputk;

Kiwapay; (C) ,w;Fg; gad;gLj;jg;gl;lJ. Nkw;Fwpj;j tPo;gbTfis cyu;j;jp tspapy;

tWf;Fk;NghJ ntsptUk; SO2 thA 0.048 mol dm−3 mkpy KMnO4 fiurypd; 50.00

cm3,Ds;Ns mDg;gg;gl;lJ. ,q;F jhf;fk;Gupahj KMnO4 cld; Kw;whfj; jhf;fk;Guptjw;F

0.12 mol dm−3 H2C2O4 fiurypy; 25.00 cm3 nrytplg;gl;lJ. fiury; Q ,y; cs;s Fe3+

nrwpitf; fzpf;f.

(C) NkNy cs;s Kiwapay; B ,ypUe;J tbjputj;jpy; cs;s H2S I Kw;whf mfw;wp

0.60 mol dm−3 NaOH cld; epakpg;Gr; nra;Ak;NghJ nrytplg;gl;l fdtsT 20.00 cm3

MFk;. fiury; Q ,y; H+ nrwpitf; fzpf;f.

(7.0 Gs;spfs;)

- 11 -

[gf; 12 Ig; ghu;f;f

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9. (a) nghRguR vy;yh mq;fpfSf;Fk; mj;jpahtrpakhd xU Nghrizg; nghUshFk;. Nkw;

nghRNgw;W jhtuq;fSf;F mj;jpahtrpakhd nghRguir toq;Fk; xU Kf;fpa cukhFk;.

FWfpa fhyg; gapu;r;nra;iffSf;fhfg; gapu;r;nra;if %ykhf mg;gw;iww;iw Neubahfg;

gpuNahfpj;jy; mt;tsT cfe;jjd;W. MfNt mg;gw;iww;iw mkpyq;fSld; jhf;fk;Gupar;

nra;J FWfpa fhyg; gapu;fSf;fhd Xu; cukhfg; gad;gLj;jyhk;.

(i) mg;gw;iww;wpy; ,Uf;Fk; Kf;fpa ,urhadr; Nru;it ahJ?

(ii) mg;gw;iww;iwf; FWfpa fhyg; gapu;r;nra;iffSf;fhf mt;thNw gpuNahfpj;jy; Vd;

cfe;jjd;W?

(iii) iej;jpupf; mkpyj;ij cjhuzkhff; nfhz;L mg;gw;iww;wpw;Fk; mkpyq;fSf;FkpilNa

cs;s jhf;fj;ij tifFwpg;gjw;Fr; rkd;gLj;jpa ,urhadr; rkd;ghl;il vOJf

(iv) Nkw;Fwpj;j jhf;fj;jpypUe;J fpilf;Fk; Kf;fpa tpisnghUs; FWfpa fhyg;

gapu;r;nra;iffSf;fhfg; nghRguR cukhf Vd; kpfTk; cfe;jJ vd;gij tpsf;Ff.

(v) ,aw;if %yg;nghUs;fisg; gad;gLj;jp ,yq;ifapy; Nkw; nghRNgw;iw cw;gj;jp

nra;aj;jf;f tpjk; gpd;tUk; cUtpy; fhzg;gLfpd;wJ.

ngw;Nwhypak;

tsp

ePu;

Nkw;

nghRNgw;W HNO3

F

Q E

D

Y

C

X

A B P

R

(I) A njhlf;fk; F tiuAs;s ,urhadg; Ngjq;fis ,dq;fhz;f.

(II) P, Q, R vd;Dk; nrad;Kiwfisg; ngaupLf.

(III) X, Y Mfpa milg;GfSf;Fupa jhf;f epiyikfis (ntg;gepiy> mKf;fk;> Cf;fp

Fwpg;gpLf (7.0 Gs;spfs;)

- 12 -

[gf; 13 Ig; ghu;f;f

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(b) xUtu; NaOH If; ifj;njhopy; uPjpapy; cw;gj;jp nra;Ak; NghJ rt;Tf; fyj;ijg;

gad;gLj;Jfpd;whu;.

(i) Nkw;Fwpj;j kpd;gFg;Gr; nrad;Kiwapy; mNdhl;lhfTk; fNjhl;lhfTk; gad;gLj;jg;Lk;

nghUs;fis vOJf. (ii) mNdhl;bYk; fNjhl;bYk; eilngWk; Fiwj;jhf;fq;fSf;fhd rkd;gLj;jpa ,urhadr;

rkd;ghLfis vOJf.

(iii) Nkw;Fwpj;j nrad;KiwapNy kpd;gFg;gpd; NghJ fiury;fspd; kpd; eLepiy vq;qdk;

Ngzg;gLfpd;wJ.

(iv) cw;gj;jpr; nrad;Kiwapy; gpujhd tpisnghUs; gf;f tpisnghUs;fSld; NkhJjy;

gpujp$ykhFk;. mjidj; jLg;gjw;F Nkw;nfhs;sg;gl;Ls;s eltbf;iffs; ahit?

(v) Nkw;Fwpj;j cw;gj;jpapd; gpujhd tpisnghUspd; ehd;F gad;ghLfisj; jUf.

(,urhadtpay; Ma;$lj;jpw;F Nkyjpfkhf)

(3.0 Gs;spfs;)

(c) Gtpapy; epiyj;jpUg;gjw;fhfr; #oypd; rkepiyiag; NgZtjw;F tspkz;lyj;jpdJk;

ePu;f;Nfhsj;jpdJk; Gtpapd; Nkw;gug;gpdJk; cj;jk mikg;G Kf;fpaj;Jtk; tha;e;jJ. xl;rprd;

,Ug;gjdhy; tspkz;lyj;ij capu;g;ghf itj;jpUf;Fk; mNj Ntis Gtpapy; tho;tpd;

epiyj;jpUf;if cWjpg;gLj;jg;gLfpd;wJ.

(i) gad;gLj;jj;jf;f O2 tspkz;lyj;jpw;Ff; fpilf;Fk; ,U tpjq;fisj; jUf.

(ii) tpyq;Fg; Gujq;fis tspkz;ly N2 Mf khw;Wk;NghJ cz;lhFk; ,il iejurd;

mlq;Fk; %d;W mad;fisf; Fwpf;f. (iii) Nkw;Fwpj;j rkepiy jfu;TWfpd;wikahy; tspkz;lyj;Jld; njhlu;Ggl;L cz;lhFk;

ehd;F Rw;whlw; gpur;rpidfis vOJf.

(iv) mkpy kioePu; kz;zpy; Nru;tjdhy; capupd kw;Wk; capuw;w njhFjpfSf;F ghjpg;G

Vw;gLk;. ,jdhy; capupdj; njhFjpf;F Vw;gLk; jhf;fq;fs; ,uz;bidf; Fwpg;gpLf.

(v) xsp ,urhad Gif %Lgdpapy; (Gfhupy;) mlq;fpAs;s $Wfs; ,uz;bidf; Fwpg;gpLf.

(vi) tspkz;lyj;jpy; CO2 ,d; kl;lj;ijf; fl;Lg;gLj;Jtjw;F Nkw;nfhs;sj;jf;f

kpfg;nghUj;jkhd Kiwfs; ,uz;bidf; Fwpg;gpLf.

(vii) thfd vupnghUs; jfdj;jpd; %ykhf ntspNaWk Gifiaf; fl;Lg;gLj;Jtjw;F

Nkw;nfhs;sj;jf;f eltbf;iffs; ,uz;bidf; Fwpg;gpLf. (5.0 Gs;spfs;)

- 13 -

[gf; 14 Ig; ghu;f;f

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10. (a) mkpy Clfj;jpy; IO3

−mad;fspd; %yk; Ngjk; X

n+MdJ

+ XO2 Mf Kw;whf xl;rpNaw;wg;gLfpd;wJ.

0.2 mol dm−3 MfTs;s Xu; Xn+

ePu;f; fiurypd; 10.0 cm3 cld; jhf;fk;Guptjw;F xU 0.1 mol

dm−3 mkpy KIO3 fiurypy; 12.0 cm3

nrytplg;gLfpd;wJ. n ,d; ngWkhdj;ijf; fhz;f.

(b) p njhFjpf;Fupa xU jpz;k %yfj;ijAk; mjd; xU thAr; Nru;itiaAk; fhl;Lk; jhf;fq;fisf;

nfhz;L cz;lhf;fg;gLk; rpy gpujhd tpisnghUs;fs; fPNo fhzg;gLfpd;wd.

H2 SO4

K2 Cr2 O7

R(aq)gr;ir

Y(aq)

NaOH

P

Z

X

XQ

kpifahd

NaOH

ntg;gkhd nrwpe;j

H2 SO4

Na2 S

+

HCl

1. P, Q, R, X, Y, Z Mfpatw;iw ,dq;fhz;f.

2. gpd;tUk; re;ju;g;gq;fspy; fpilf;Fk; vy;yh tpisnghUs;fisAk; cs;slf;fpr; rkd;gLj;jpa rkd;ghLfis vOJf. (,t;tpisnghUs;fs; jtpu;e;j Vida gf;f tpisnghUs;fSk;

cUthfyhk;.)

(i)

H2 SO4

K2 Cr2 O7P Q + R

(ii) P Na2S + X kpif

NaOH

(iii) Q Na2S + X + Y Na OH

(iv) Y Q + Z + X HCl

(v) Q Z + Xntg;gkhd nrwpe;j

H2SO4

3. Z ,dhy; g+ ,jo;fis ntspwr; nra;jiyr; rkd;gLj;jpa ,urhadr; rkd;ghl;bd; %yk;

vLj;Jiuf;f. (5.0 Gs;spfs;)

- 14 -

[gf; 15 Ig; ghu;f;f

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(c) 2 A + B + C tpisnghUs;fs;

Nkw;Fwpj;j jhf;fj;jpd; ,af;ftpir gw;wpf; fw;gjw;Fr; nra;ag;gl;l gupNrhjidf;Fupa juTfs;

gpd;tUk; ml;ltizapy; fhzg;gLfpd;wd.

gupNrhjid

A apd;

njhlf;fr; nrwpT

mol dm−3

B apd; njhlf;fr;

nrwpT

mol dm−3

C apd; njhlf;fr; nrwpT

mol dm−3

tpisnghUs;

cz;lhFk; njhlf;f

tPjk; $ mold m−3s−1

1 0.05 0.05 0.05 1.0 × 10−3

2 0.15 0.05 0.05 3.0 × 10−3

3 0.15 0.15 0.05 9.0 × 10−3

4 0.15 0.15 0.05 9.0 × 10−3

(i) (I) jhf;fj;jpd; tPjj;jpw;fhd xU fzpjf; Nfhitia vOJf.

(II) A, B, C Mfpa jhf;fq;fs; xt;nthd;Wk; njhlu;ghf epiuiaf; fzpf;f.

(III) jhf;fj;jpw;Fupa tPjr; rkd;ghl;il vOJf.

(ii) Nkw;Fwpj;j jhf;fk; fPNo jug;gl;Ls;s mbg;gilg; gbKiwfspD}lhf eilngWfpd;wnjdf;

fUjpf; Nfl;fg;gl;Ls;s tpdhf;fSf;F tpil vOJf.

I 2 A nP (kpf tpiuthf eilngWfpd;wJ)

II P + B nQ (nkJthf eilngWfpd;wJ)

III Q + nC tpisnghUs;fs; (kpf tpiuthf eilngWfpd;wJ)

gbKiw 1 ,w;fhf A, P Mfpatw;wpd; nrwpTfs; Neuj;Jld; khWk; tpjk; fPNo

fhzg;gLfpd;wJ.

(d)

10

0.5

0.8

0.3

30 50 70

nrwpT $

mol

dm−3

Neuk;$ s

(i) jhf;fk; njhlq;fp 10 s ,w;Fg; gpd;du; A apw; nrytplg;gl;Ls;s nrwpitAk; P nra;Js;s nrwpitAk; gad;gLj;jpj; jhf;fj;jpd; n ,d; ngWkhdj;ijf; fzpf;f.

(ii) Nkw;Fwpj;j jhf;fj;jpd; rkepiyg; gbKiwfSf;fhd rkepiy khwpyp Kc iaf; fzpf;f.

(iii) Nkw;Fwpj;j jhf;fj;jpd; tPjj;ijj; JzpAk; gbKiwfSf;fhd tPj tpjpia vOJf.

(iv) Nkw;Fwpj;j tpilfisf; nfhz;L tPjj;ijj; JzpAk; gbKiwfSf;fhd tPjk;

R = KKc [A] [B] vdf; fhl;Lf. K vd;gJ jhf;f tPjkhFk; (7.5 Gs;spfs;)

* * *

- 15 -

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f.ngh.j. (c.juk;) cjtpf; fUj;juq;F - 2014

,urhadtpay; Itpilaspj;jYf;fhd topfhl;ly;

tpdh ,yf;fk; tpil tpdh ,yf;fk; tpil

(1) 3 (26) 2

(2) 5 (27) 5

(3) 1 (28) 4

(4) 1 (29) 2

(5) 3 (30) 3

(6) 3 (31) 5

(7) 4 (32) 3

(8) 5 (33) 2

(9) 1 (34) 5

(10) 5 (35) 2

(11) 3 (36) 3

(12) 3 (37) 5

(13) 2 (38) 1

(14) 3 (39) 1

(15) 4 (40) 2

(16) 4 (41) 2

(17) 3 (42) 5

(18) 2 (43) 1

(19) 5 (44) 4

(20) 1 (45) 5

(21) 2 (46) 3

(22) 4 (47) 4

(23) 2 (48) 1

(24) 5 (49) 4

(25) 1 (50) 2

[gf;. 2 Ig; ghu;f;f

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1. (a) (i) He < O < Cl < Mg

(ii) Li

(iii) FNshuPd;

(iv) CH4 < CO < CO2

(v) NO2

+ < NO2

− < NO3

− (4×5 = 20 Gs;spfs;)

(b) (i) (+) (+)

(−)

COa Ob

Oc ≡ N (10 Gs;spfs;)

(ii) (+) (+)

(−)

CO ≡O

O N

(+) (+) CO ≡

O

O N

(−)

(1) (2)

Vw;wq;fs; gue;Js;s tpjq;fs; rkkhifahy; cWjpg;ghLfs; xd;Wf;nfhd;W rkkhFk;.

vdpDk; $Ljyhd kpd;ndjpu; mZthfpa N, O Mfpatw;wpd; kPJ Neu; Vw;wq;fs;

,Uj;jy; cWjpg;ghL Fiwtjw;Ff; fhuzkhFk;.

(5×3 = 15 Gs;spfs;)

(iii) CO/ fhgNdhnuhl;irl;L (02 Gs;spfs;)

(c) mZ ,dq;fyj;jy; mZitr; Rw;wp ,yj;jpud;

Nrhbf; Nfj;jpufzpjk;

Oa sp3ehd;Kfp

Na sp2jsKf;Nfhzp

C sp NfhL

(3×6 = 18 Gs;spfs;)

(d) (i) ,yj;jpud; epiyaikg;G

Zn − 4sS2 3d10 Co − 4s2 3d7

Zn ,d; epiyaikg;Gj; njhlu;gstpy; cWjpahdJ. ,yj;jpud;fs; ,lk;ngau;tjw;fhd

ehl;lk; FiwthFk;.

Xu; cNyhfj;jpd; gpizg;gpd; typik FiwAk;. (2×5 = 10 Gs;spfs;)

(ii) C

O

OHCH3 ,d; ,il %yf;$w;W H gpizg;G cs;sJ. C

O

HCH3 ,d; epiyahd

,U KidT - epiyahd ,U KidTf; ftu;r;rp tpirfs; khj;jpuk; mNj Ntis

njhlu;gstpy; typik FiwthFk;. (3×3 = 9 Gs;spfs;) (nkhj;jk; 92 Gs;spfs;)

f.ngh.j. (c.juk;) cjtpf; fUj;juq;F - 2014

,urhadtpay; IItpilaspj;jYf;fhd topfhl;ly;

- 2 -

[gf;. 3 Ig; ghu;f;f

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2. (a) (i) A - Na B - Mg

(ii) C - NaOH E - MgO (16 Gs;spfs;)

(iii) H2 $ Ijurd; (04 Gs;spfs;)

(iv) 4 Na + O2 2Na2O 2Na + Nkyjpf O2 Na2O2

(v) Mg(s) + Ijhd H2SO4 (aq) MgSO4 (aq)

+ H2(g)

Mg(s) + nrwpe;j 2H2SO4 (aq) MgSO4 (aq)

+ SO2(g) + 2H2O(l) (04 Gs;spfs;)

(vi) NaCl(aq), NaOCl(aq), H2O(l) (2×3 = 6 Gs;spfs;)

(vii) NaOH - td;%yk;

Mg(OH)2 - %yk;

Al (OH)3 - <upay;G

H2 SiO3 - kpf nkd;dkpyk;

H3 PO4 - nkd;dkpyk;

H2 SO4 - td;dkpyk;

HClO4 - kpf td;dkpyk; (2×3 = 6 Gs;spfs;) (6×6) + (7×2) Gs;spfs;)

(b) (i) Co (05 Gs;spfs;)

(ii) Is2 2s2 2p6 3s2 3p6 3d7 4s2 (10 Gs;spfs;)

(iii) + II CoO (02 Gs;spfs;)

+ III Co2O3 (02 Gs;spfs;)

(iv) [Co(H2O)6]2+ (06 Gs;spfs;)

(v) (a) Co(OH)2 / [Co(OH)2(H2O)4] - ePy tPo;gbT

[Co(NH 3)6]2+ - kQ;rl; fgpy fiury; (05 Gs;spfs;)

(b) [Co(H2O)6]2+ + 2OH− Co(OH)2 + 6H2O /

Co(OH)2 + 6NH3 [Co(NH3)6]

2+ + 2OH− (05 Gs;spfs;) [Co(H2O)6]

2+ + 2OH− [Co(OH2) (H2O)4] + 2H2O (05 Gs;spfs;)

(vi) epwk; fLk; epwkhFk;. kQ;rs; fgpyk; nrk;kQ;rs; fgpykhf khWfpd;wJ> (05 Gs;spfs;)

[Co(NH3)6]2+ rpf;fy; %yk; [Co(NH3)6]

3+ Mf xl;rpNaw;wg;gLfpwJ. (05 Gs;spfs;)

- 3 -

[gf;. 4 Ig; ghu;f;f

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3. (a) (i) PV = nRT %yk;

V = lA MFk;.

P1lA = nTRT ; nT = P1lA RT

(ii) Kjw; re;ju;g;gj;jpw;F P1lA = nTRT T = P1lA / RT

,uz;lhtJ re;ju;g;gj;jpw;F P2 lA = nTR2T nT = P2lA / 2RT tsp %y;fspd; nkhj;j vz;zpf;if khWtjpy;iyahifahy;

P1lA RT

P2lA 2RT

=

P2 = 2P1

(iii)

xU Fwpj;j

rf;jpiaf;

nfhz;l

%yf;$w;Wg;

gpd;dk;

fjp / ms-1

T1

2T

^4.0Gs;spfs;)

(b) Mtp

mKf;fk;

XA

10

Mtp

mKf;fk; Mtp

mKf;fk;

XA

Mtp

mKf;fk;

PB°

PA° PA

°

PC°

XBXc0 0

1 1 01

PAB

PAC

PA

PCPA

PB

cU ^1& cU ^2&

(v) fyit AB ,yl;rpa epyikapy; vjpu; tpyfiyf; fhl;Lk; mNj Ntis fyit AC ,yl;rpa epyikapy; Neu;tpyfiyf; fhl;Lfpd;wJ. ^6.0Gs;spfs;)

4. (a) (i)

CCH3

CH3 NH2

CH3

C

CH3

CH3 OH

CH3

C F (ii)

C H

C2H5 NH2

CH3

C

OC2H5 CH3

C

H

C3H5 OH

CH3

B E Y

- 4 -

[gf;.5 Ig; ghu;f;f

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(iii)

CH3CH2CH2CH2NH2 C H

CH3 NH2

CH3

CH2

(iv)

C H

CH2 NH2

CH3

CH3 C H

CH2 OH

CH3

CH3 C C H

O

H

CH3

CH3

A D X (10 × 4 = 40 Gs;spfs;)

(b) (i) CH3 OH (4 Gs;spfs;)

(ii) H CH3

CH3

CCCH3

CH3

C C Br

BrH

OHCH2 CH3

CH3

CCH2 CH3

CH3

C

OMgBr +−

P Q R S

(5 × 4 = 20 Gs;spfs;) (iii)

jhf;fk; jhf;f tif

1

2

3

O E

AE (2 × 3 = 6 Gs;spfs;) (30 Gs;spfs;)

(c) (i)

H3C +8

CH3

CH3

BrC−8

Kjw; gbKiw

H3C

CH3

CH3

OHCH3C

H3C

CH3

C+ : OH

−

H3C+ Br−

CH3

CH3

C+..

(7 × 2 = 14 Gs;spfs;)

(ii) CH3− CH2 - Br Kjy; mw;fapy; Viyl;L

,J cz;lhf;Fk; fhNgh fw;wad; CH3CH2

+ MFk;.

mJ Kjd;ik fhNgh fw;wadhifahy; cWjpapy;yhjjhFk;.

∴ C - Br gpizg;G jfu;TWtJk; fUehl;l ( OH− cldhd gpizg;G cz;lhjYk xNu

jlitapy; cz;lhfpd;wikahy; xU jdpg;gbKiwj;jhf;fkhFk;. ^10)

- 5 -

[gf;.6 Ig; ghu;f;f

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H

H

++ Br−

CH3

+8BrC H3C

H

H

OHC : OH−

−8

^05)

Mdhy; (CH3)3 C+ fhNgh fw;wad; Gilf; fhNgh fw;wad; Mifahy; mJ

cWjpahdJ. ^01) (30 Gs;spfs;)

5. (a) (i) PV = nRT P × 2.5 × 10−3m3 = 0.15mol × 8.314JK−1mol−1 × 700K PV = 3.49 × 105Nm−2

(ii) PV = nRT 8.5 × 105Nm−2 × 2.5 × 10−3m3 = n × 8.314JK−1mol−1 × 700K n = 0.365 mol

(iii) 2H2(g) + X2(g) 2H2X(g)

(x − 0.08) + (0.15 − 0.04) + (0.08) = 0.365 x = 0.255 mol

(iv) 2

[H2X(g)]

[X(2g)] [H2(g)]

2 Kp =

P2

H2X(g)

P P2

H2(g) × X2(g)

[H2X(g)] =

[X2(g)] =

[H2(g)] =

0.08 2.5

0.11 2.5 0.175 2.5

mol dm−3

mol dm−3

mol dm−3

(v)

=

2 0.08 2.5 )(

0.11 2.5 )( 0.175

2.5 )( mol−1

dm3

4.7 mol−1 dm3

2 Kc =

2)( Kp =

=

0.080.365 × 8.5 × 105

2)( 0.1750.365 × 8.5 × 105 )( 0.11

0.365 × 8.5 × 105

Pa−1

8 × 10−7 Pa−1

=

= PH2X(g)

2)( 0.080.365 × 8.5 × 105

)( 0.1750.365 × 8.5 × 105

)( 0.110.365 × 8.5 × 105

= PH2(g)

PX2(g)

Pa

Pa

Pa

5a^60Gs;spfs;)

(b) (i) Kw = [H+

(aq)] [OH−

(aq)]

(ii) −log Kw = −log {[H+

(aq)] × [OH−

(aq)]}

−log [H+

(aq)] −log [OH−

(aq)]

pKw = pH + pOH

- 6 -

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(iii) BOH(aq) B(aq) + OH(aq)-+

Kb =[B+

(aq)][OH−(aq)]

[BOH(aq)]

Kb =[OH−

(aq)]C

[OH−(aq)] = (KbC)1/2

12

12

12

12

12

12

pOH = pKb − log C

14 - pH = pKb − log C

pH = 14 − pKb + log C

- log [OH−] = − log Kb − log C

12 1

2

2

(iv)

= 11

= 14 − − 0.552

PH = 14 + log (1× 10−5 mol dm−3) + log 0.1 mol dm-312

12

^30) (v) BCl + NaOH BOH + NaCl

NaOH + HCl NaCl + H2O

BOH + HCl BCl + H2O

(3 × 4 = 12 Gs;spfs;) (vi) (I) pH

phn

V HCl

Me.O

15 35

}

}

(2 × 6 = 12 Gs;spfs;)

(II)

= 1.5 × 10−3 mol

} = (35 − 15) 0.11000

BOH cld; jhf;fk; Gupe;j

HCl %y;

} 0.11000

NaOH cld; jhf;fk; Gupe;j

HCl %y; = × 15

= 2 × 10−3 mol

= (1.5 × 10−3 + 2 × 10−3) × 50 25

X ,y; ,Ue;j NaOH %y;

= 7 × 10−3 mol

7 × 10−3

25C2 = × 1000 = 0.28 mol dm−3 (2 × 6 = 12 Gs;spfs;)

2 × 10−3

25C1 = × 100 = 0.08 mol dm−3

5b (90 Gs;spfs;)

- 7 -

[gf;.8 Ig; ghu;f;f

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6. (a) (i) i. ePu;f; fiurypy; Kw;whf madhf;f $l;lw; gpupTw;W ,Uf;Fk; nghUs;fs; my;yJ jpz;k

epiyapy; Nghd;W ePu;f;fiurypYk; madhf ,Uf;Fk; nghUs;

ii. mj;jifa Nru;itfspd; epuk;gw; fiurypd; mad; nrwpT kpf cau;thFk;.

mad;fSf;fpilNaAk; ftu;r;rp tpirfs; ,Uf;fpd;wd. (mad;fs; xd;iwnahd;W

rhuhjdty;y) (5 × 2 = 10 Gs;spfs;) (ii) Ú Kjy; Ag2CrO4(s) $l;lg;gpupT eilngWfpd;wJ.

Ú xU Fwpj;j re;ju;g;gj;jpy; Kd;Kfj; jhf;fj;jpd; tPjk; gpd;Kfj; jhf;fj;jpd; tPjj;jpw;Fr;

rkdhFk;.

Ag2CrO4(s) 2Ag+(aq) + CrO4 (aq) −2 ^01)

Ú mt;tplj;jpypUe;J mad; nrwpT khwhky; ,Uf;Fk; mNj Ntis

2−

[Ag+(aq)]2 [CrO4- (aq)] vd;Dk; mad; ngUf;fk; cupa ntg;gepiyapy; Nru;itapd;

KSP apw;Fr; rkk; NH3 Ir; Nru;f;Fk;NghJ

Ú Ag+(aq)+2NH3(aq) [Ag(NH3)2]

+(aq)

2 vd;Dk; rkepiy ,Ug;gjdhy; fiurypd;

Ag+ nrwpT Fiwfpd;wJ. mg;NghJ ,yr;rw;wypNaapd; Nfhl;ghl;;bw;Nfw;g Nkw;Fwpj;j

jhf;fk; 1 tpisnghUs;fis Nehf;fpa ehl;lk; 2−[CrO4 (aq)] mjpfupf;fpd;wJ.

(2 × 10 = 20 Gs;spfs;) (iii) Ag2CrO4(s) 2Ag+

(aq) + CrO4(aq)2−

2 × 10−4

1 × 10−4rkepiyr;

nrwpTmol dm−3

KSP = [Ag+(aq)]

2 [CrO4(aq)] = (2 ×10−4mol dm−3)2 (1 ×10−4mol dm−3) = 4 ×10−12mol3

dm−9

2−

(20 Gs;spfs;)

(iv) Gjpa [CrO4 ] = (5 ×10−5 + 100) mol dm−3

= 1 mol dm−3

[Ag+(aq)] =

Ksp 2−

[CrO4aq

1/2

=

= 2 ×10−6mol dm−3

tPo;gbthFk; Ag2CrO4 %y;

= (2 ×10−4 − 2 ×10−6 ) × 5001000

mol

= 1 ×10−4mol

2−

1/24 ×10−12 mol3 dm−9

100 mol dm−3 )(

1

(20 Gs;spfs;)

(v) KC = [Ag(NH3)+

2(aq)] [Ag+

(aq)] [NH3 (aq)]2

1 ×108 mol dm−3 = (2 ×10−4mol dm−3) (2 ×10−6mol dm−3 ) [NH3 (aq)]

2

[NH3](aq) = 1 × 10−3mol dm−3

xl;Lnkhj;jkhd NH3 %y; = (1 × 10−3) + (2 × 2 × 10−4) mol

2 = 7 × 10−4mol

(20 Gs;spfs;)

6a(90 Gs;spfs;)

- 8 -

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(b) (i) (I) ∆H° = (2 × 105 + 0) − (0 + − 89) KJ mol−1 = 299 KJ mol−1 (12)(II) ∆S° = (2 × 72 + 27) − (42 × 2 − 137)JK−1 mol−1 = 224 JK−1 mol−1 (12)

(III) ∆G° = ∆H°− ∆S°T = 299 KJ mol−1 − 224 JK−1 mol−1 × 298 K = 299 KJ mol−1 − 66.752 KJmol−1

= (299 − 66.752) KJmol−1

= 232.248 KJmol−1 (12) (ii) ∆G° ,w;F + fpilf;fpd;wJ. jug;gl;Ls;s jhf;fk; Rajhf;fkd;W. mjw;Nfw;g X jho;j;Jk;

fUtpahfTk; Y jho;j;Jk; fUtpahfTk; jhf;fk; Gupjy; Ntz;Lk;. mjhtJ njhlupy; Y NkNyAk; X fPNoAk; ,Uf;fpd;wJ. (10)

(vi) I. Anode - Y Cathode − X II. Anode Y(s) Y2+

(aq) + 2e

III. Cathode X2+(aq) + 2e X(s)

IV. Y(s) Y2+(aq, 1mol dm−3) X2+(aq, 1mol dm−3) X(s) (14 Gs;spfs;) 6b (60 Gs;spfs;)

7. (a) (i)

C C − H C C − Na+

+ 2Na 22 + H2 (10)

(ii) C C − Na+

+ CH3 C H O

CH3 C C C

O− Na+

H

(10)

(iii) C C − H

C C− Na+

Hg2+

Na

Ijhd H2SO4

CO

CH3

CH3 C CC O− Na+

CH3 C CC OH

CH3 C CC Br

CH3 C CC Br

H2O

PBr3

Br2 / CCl4 Br

Br Br

Br

(5 × 11 = 55 Gs;spfs;) 7a (75 Gs;spfs;)

(vi) i. W;afm%arlhla Ndú; ls¯fï jdish

l=ula o @

ii. W;afm%arlhla m%;sl%shdj

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[gf;.10 Ig; ghu;f;f

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(b) (i) a, h, f Mfpad (10)

(ii) a - mkpy %y

h - mkpy %y

f - fUehl;lg; gpujpaPLfs; (15) 7b (25 Gs;spfs;)

(c) (i)

CUCNKCN

0 - 5 °C A

NH2 N2Cl

OH COOH

CNNaNO2(i)

dil H2SO4

(ii) Ijhd HCl

miw

ntg;gepiy

nrwpe;j

H2SO4

O

O

C

B

(9 × 4 = 36 Gs;spfs;)

(ii)

+ NaCl

+ Ijhd HCl

+ Ijhd HCl C O− Na+

O

NH2

fpilf;Fk; fiurYld; Ijhd HCl fiury; Nru;f;fg;gLfpd;wJ.

fpilf;Fk; ntz;epw tPo;gbT tbfl;b Ntwhf;fg;gLfpd;wJ. mJ ngd;Nrhapf; mkpykhFk;. (14)khw;W tpil:

+ NaOH(aq)N

H OC

C O− Na+

ONH2

NH3

+Cl

−

(aq)

COOH

Ijhd HCl

fpilf;Fk; ntz;epw tPo;gbT tbfl;b Ntwhf;fg;gLfpd;wJ. mJ ngd;Nrhapf; mkpykhFk;.

NH O

C

NH3

+Cl

−

(aq) COOH

+

jug;gl;Ls;s Nru;it ePu; NaOH cld; ntg;gkhf;fg;gLjy;.

7c (50 Gs;spfs;)

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[gf;.11 Ig; ghu;f;f

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8. (a) (i) ntg;gkhf;Fk; NghJ ePupy; fiutjdhYk; Fspu;r;rpahf;Fk; NghJ kWgbAk; fLk; kQ;rs;

epw tPo;gbT fpilg;gjdhYk; PbI2 ,Uf;fpd;wik cWjpg;gLj;jg;gLfpd;wJ. ,sQ; rptg;G

epwKs;s Nru;it Xu; mkpyj;jpy; fiufpd;wikahy; xU %yr; Nru;itahFk;.

nrwpe;j HCl cld; ePy epwj;ij Co2+ jUfpd;wJ.

∴ PbI2 Tk; Co(OH)2 ck; mlq;Ffpd;wd. (2 × 8) + (4 + 4 Gs;spfs;)

(ii) [CoCl4]2−

Tetrachlorocobaltate(II) ion (3 × 2 = 6 Gs;spfs;) 8a (30 Gs;spfs;) (b) (1) ntg;gkhf;Fk; NghJ fWg;G epwkhf khWk; ntz;epw <a tPo;gbT PbS2 O3 MFk;;

(3 × 3 = 9 Gs;spfs;) (2) ÷ tbjputk; Y ,y; xU jho;j;Jk; fUtp cs;sJ.

÷ jho;j;Jk; fUtp Ca2+ maDld; xU tPo;gbit cz;lhf;fpf; nfhz;L ntspNaWfpd;wJ.

÷ ,t;tPo;gbT CaC2O4 Mf ,Uj;jy; Ntz;Lk;. (3 × 3 = 9Gs;spfs;)

(3) tbjputk; Z ,y; Ca2+ mad;fs; vQ;rpapUf;Fk; mNj Ntis nfhjpf;Fk; NghJ xU

tPo;gbT fpilg;gjw;F HCO3

− mad;fs; CO3

2− tiuf;Fk; gpupif mile;Js;sd. CaCO3

tPo;gbthFk;. (3 × 3 = 9Gs;spfs;)

(4) NO3

−my;yJ NO2

- Mf ,Uf;fyhk;. tbjpwd; Z ,y; Xu; xl;rpNaw;wk; ,Uf;fKbahjhifahy;

NO2

- Mf ,Uf;f KbahJ. (2 × 4 = 8 Gs;spfs;)

∴ ehd;F mad;fSk; C2O4 ,2−

S2O3 2− , HCO3

−, NO3

−

MFk;.

(4 × 4 = 16 Gs;spfs;) 8b cr;r Gs;sp (50 Gs;spfs;)

(c) (A) Cl− nrwpitf; fhz;f

AgCl %y;fs; = Ag+ mad; %y;fs;

= 0.002 mol Cl

− nrwpT = 0.08 mol dm−3 (7)

= 0.287g

143.5gmol−1

(B) 2Fe3+ + 3H2S 2FeS + S(4)+ 6H+

4Fes + 7O2 2Fe2O3 + 4SO2(4) S + O2 SO2

H2O + 5SO2 + 2MnO4 5S2O4 +

2Mn2+(4)+ 4H+

6H+ + 5C2O4 + 2MnO4 10CO2 +

2Mn2+(4)+ 8H2O

C2O4 %y;fs; = 0.12 × 25 1000

= 3 × 10−3mol

vQ;rpAs;s MnO4 %y;fs; = 3 × 10−3 × 2 5

= 1.2 × 10−3mol

SO2 cld; jhf;fk; Gupe;j MnO4 %y;fs; = 0.048 × 50 1000

− 1.2 × 10−3

= 1.2 × 10−3mol

− −

2-

2-

−

−

(4) (3 × 5 = 15 Gs;spfs;)

Fe3+ %y;fs; = Fes %y;fs; = SO2 %y;fs;

= 1.2 × 10−3mol × 5 2

× 2 3

Fe3+ nrwpT = 2 × 10−3

× 1000 25

= 0.08 mol dm−3

(3 × 8 = 24 Gs;spfs;)

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(C)H

+ nrwpitf; fhzy;

NaOH %y;fs; = (B) ,d; tbjpwtj;jpy; xl;Lnkhj;jkhd H+ %y;fs;

= 0.6 × 20

1000

= 12 × 10−3mol

H2S ,y; fpilj;j %y;fs; H+ %y;fs; = 3 × Fe3 mol

= 3 × 2 × 10−3mol = 6 × 10−3mol

njhlf;f fiurypy; H+ %y;fs; = (12 × 10−3 − 6 × 10−3)

= 6 × 10−3mol njhlf;f fiurypy; H

+ nrwpT =

6 × 10−3

× 1000 25

= 0.24mol dm−3 (3 × 8 = 24 Gs;spfs;)

9' (a) (i) (i) Ca3 (PO4)/ Ca3(PO4)2 CaX2 (5) (ii) mjpy; ePupd; fiujpwd; Fiwthifahy; (5)

(iii) 3Ca3(PO4)2 CaX2 + 14HNO3 3Ca(H2 PO4)2 + 7Ca(NO3)2 + 2HX (10) (iv) ePupy; ed;whff; fiufpd;wikahy; vspjhff; FWfpa fhyg; gapu;fSf;Fg;

gpuNahfpf;fg;glyhk;.

mt;tad;fs; vspjhfj; jhtu Ntu;fspdhy; cwpQ;rg;gLfpd;wd.(5) (v)

ngw;Nwhypak;

tsp

ePu;

Nkw;

nghRNgw;W

Y

XH2(g)

P = 250 atmT = 450°CCf;fp Fe

NH3(g)

N2(g)gFjpgl

tbj;jy;

P = 1 - 9 atmT = 850 - 1225°Cpt/ Rd Cf;fp

NO(g)

NO2(g)

HNO3 (aq)

vgla;l;

mkpyk;

Jkpj;jy;

kpd;

gFg;G

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(I) A - H2(q) B - N2(q) C - NH3(q) D - NO(g) E - NO2(g)

F - mg;gw;iww;W (6 × 4 = 24Gs;spfs;)

(II) P - gFjpgl tbj;jy;

Q - kpd;gFg;G

R - mkpye;Jkpj;jy; (3 × 3 = 09 Gs;spfs;)

(III) X - 250 atm, 450°C, Fe - Cf;fp

Y - 850°C - 1225°C ,1 - 9 atm, gpshw;wpdk;$ cNuhbak; Cf;fp (6 × 2 = 12 Gs;spfs;) 9a (70 Gs;spfs;)

(b) (i) mNdhl;L - ijj;Njdpak;

fNjhl;L - epf;fy; (3 × 2 = 06 Gs;spfs;)

(ii) 2Cl(aq)

−

Cl2(g) + 2e

^mNdhl;by;& (4)

2H2O (l) + 2e

−2OH(aq) + H2(g) ^fNjhl;by;& (4)

(iii) mNdhl;by; Vw;wq;fs; mfw;wg;gLtjdhYk; fNjhl;by; Vw;wq;fs; toq;fg;gLtjdhYk;$

Na+ mNdhl;bypUe;J fNjhl;L miwf;Fr; nry;tjd; %yk; (4)

(iv) nkd; rt;tpD}lhf mdad;fs; gupkhwg;gLtjpy;iy Mifahy; OH−

,lk;ngau;itj;

jtpu;g;gjd; %yk; Cl2 cld; NkhJtijj; jtpu;j;jy; (4)(v) CO2 ck; Vida mkpy thAf;fSk; cwpQ;rYf;F / rtu;f;fhuj; J}s; rha tif

cw;gj;jpf;F ePiuj; njhopw;gl tpLk;NghJ ghu cNyhfq;fis mfw;Wtjw;F ePupd;

mkpyj;jpwid ePf;fy; (4 × 2 = 08 Gs;spfs;) 9b (30 Gs;spfs;)

(c) (i) xspj;njhFg;Gf;Fupa xspapdhy; ePu; %yf;$Wfis jfu;Twr; nra;tjd; %yk;

xspg;gFg;G (3 × 2 = 06 Gs;spfs;) (ii) NH4 , NO2 , NO3

+ − − (3 × 2 = 06 Gs;spfs;)

(iii) Ú kdpjdpd; Rfhjhur; rPuopT Ú jhtu tsu;r;rp Fd;wy; Ú ryitf; fy;> cNyhff; fl;likg;Gfs; Nrjkiljy;

Ú ghiw thdpiyahy; mopjy;

Ú fhyepiy khw;wq;fs;

Nghd;w Vw;Wf;nfhs;sj;jf;f tpilfs; (3 × 4 = 12 Gs;spfs;)

(iv) 1. ry;g+upf;> iej;jpupf; Nghd;w mkpyq;fs; kz;zpYs;s mYkpNdh rpypf;Nfw;Wfis

fiwj;J Al3+ mad;fis ePUf;F tpLtpj;jy;;. ,J kPd;fspd; g+f;fspd; njhopw;ghl;Lf;F

jilia Vw;gLj;jy;.

2. kz;zpD}lhfg; ghAk; mkpy kio ePu;g; Nghridg; nghUs;fis mfw;Wk; mNj

Ntis Al3+ mad;fis tpLtpj;jy; ,jdhy; jhtuq;fspd; Ca2+ , Mg2+

mj;jpahtrpag;

NghridfSf;Fg; gjpyhf Al3+ mad;fis cwpQ;ry; (4 × 2 = 08 Gs;spfs;)

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(v) gPNdhd; my;bifl;L> ngnuhl;rp mrw;iwd; iej;jpNuw;W (PAN) ngnuhf;rp ngd;rPd;\ iej;jpNuw;W (PBN) (3 × 2 = 06 Gs;spfs;)

(vi) fhlhf;fYk; tdg;ghJfhg;Gk;

vupnghUs; jfdj;ij ,optsthf;fy; (3 × 2 = 06 Gs;spfs;)

(vii) vQ;rpid ,irthf;fy;

Cf;fp khw;wpaikg;ig gad;gLj;jy; (3 × 2 = 06 Gs;spfs;)

9c (50 Gs;spfs;)

10' (a) Xn+

+ XO2 + (5 − n) × 10 (4)

12H+ + 2IO3

−+ 10e I2 + 6H2O × (5 − n) (4)

12(5 − n) H+ + 2(5 − n) IO3

−+ 10Xn+ 10

+ XO2 + (5 − n) I2 + 6(5 − n)H2O (4)

IO3

−: Xn+ = (10 − 2n) : 10

(5 − n) : 5 (2)

gad;gLj;jpa Xn+ %y;fs; = 0.2 × 101000

= 2 × 10−3 mol (2)

5 × 1.2 × 10−3 = (5 − n) 2 × 10−3 (2)

6.0 × 10−3 = 10 × 10−3 − 2 × 10−3 n

− 4 × 10−3 = −2 × 10−3 n

n = 2 (3)

IO3

−

Xn+ = (5 − n) 5

1.2 × 10−3 mol 2 × 10−3 mol

= (4)

10a (25 Gs;spfs;)

(b) 1. P - H2S Q - S R - Cr2(SO4)3 X - H2O Y - Na2S2O3 Z - SO2 (6 × 2 = 24 Gs;spfs;)

2. (i) 3H2S(g) + 4H2SO4(aq) + K2 Cr2O7(aq) K2 SO4 (aq) + Cr2 (SO4)3 (aq) + 3S(s) + 7H2O(l)

(ii) H2S(g) + Nkyjpf 2NaOH(aq) Na2 S (s) + 2H2 O(l)

(iii) 4S(s) + 6NaOH(aq) 2Na2 S (s) + Na2 S2O3(aq)+ 3H2 O

(iv) Na2 S2O3(aq) +2 HCl 2NaCl(aq)+ H2 O(l) + S(s) + SO2 (g)

(v) S(s)+ #lhd nrwpe;j 2H2SO4 (aq) 3SO2 (g) + 2H2 O(l) (5 × 4 = 20 Gs;spfs;)

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3. SO2(g) + 2H2O(l) H2SO4 (aq) + 2H+ + 2e

X + nH+ + ne XHng+tpjo;fs; $

epwr;rhak; epwkw;w

Nru;it

(6) 10b (50 Gs;spfs;)

(c) (i) I R = K [A]x [B]Y [C]Z

(10)

II 1 × 10−3 mol dm−3s−1 = K (0.05 mol dm−3)x (0.05 mol dm−3)Y (0.05 mol dm−3)Z (01) 3 × 10−3 mol dm−3s−1 = K (0.15 mol dm−3)x (0.05 mol dm−3)Y (0.05 mol dm−3)Z (02) 9 × 10−3 mol dm−3s−1 = K (0.15 mol dm−3)x (0.15 mol dm−3)Y (0.05 mol dm−3)Z (03) 9 × 10−3 mol dm−3s−1 = K (0.15 mol dm−3)x (0.15 mol dm−3)Y (0.05 mol dm−3)Z (04) (5 × 4 = 20 Gs;spfs;)

1

2

1 × 10−3

3 × 10−3 = (0.05)(0.15)

X

X

x = 13

2

9 × 10−3

3 × 10−3 =

y = 1

0.150.05

Y( )

(2)

(2)

(2)

(2)

4

3

9 × 10−3

9 × 10−3 =

z = 0

11

Z( ) (2)

(2)

III R = K [A] [B] (10)

(ii) I A gad;gLj;jg;gl;l msT = 0.2 mol (2) B cUthf;fg;gl;l msT = 0.2 mol (2) ∴ n = 2 A apd; 0.2 %y; gad;gLj;jg;Lk; NghJ B apd; 0.2 %y; cw;gj;jp

nra;ag;gLfpd;wJ.(2) MfNt n = 2 MFk;. (2)

II Kc = [P] [A]

n

= (0.4 ) mol dm−3

(0.4) mol dm−3 = 1

(2) (2) (2)

III R = K [P] [B] (2)

IV Kc = [P] [A] [P] = Kc [A]R = K Kc [A] [B]

(2)

(2)(2) 10c (50 Gs;spfs;)

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