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BAI TAP LOP 12. SAT

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  • Bin tp vin : o Th Tip www.hoc360.vn

    ST V HP CHT ST

    Cu 1: kh hon ton 30 gam hn hp CuO, FeO, Fe2O3, Fe3O4, MgO cn dng 5,6 lt khCO ( ktc). Khi lng cht rn sau phn ng l

    A. 28 gam. B. 26 gam. C. 22 gam. D. 24 gam.Cu 2:Kh hon ton 17,6 gam hn hp X gm Fe, FeO, Fe2O3 cn 2,24 lt CO ( ktc).Khi lng st thu c l

    A. 5,6 gam. B. 6,72 gam. C. 16,0 gam. D. 8,0 gam.Cu 3:Cho 4,48 lt kh H2 qua bt FeO un nng thu c 8,4g Fe. Hiu sut ca phn ng trn l:

    A. 60% B. 80% C. 75% D. 40%Cu 4:Hn hp A gm FeO, Fe3O4, Fe2O3. Trong hn hp A, mi oxit u c 0,5 mol. Khilng ca hn hp A l

    A. 231 gam. B. 232 gam. C. 233 gam. D. 234 gam.Cu 5:Kh hon ton 16 gam Fe2O3 bng kh CO nhit cao. Kh i ra sau phn ng cdn vo dung dch Ca(OH)2 d. Khi lng ktta thu c l

    A. 15 gam B. 20 gam. C. 25 gam. D. 30 gam.Cu 6:

    Kh hon ton m gam hn hp X gm FeO v Fe2O3 bng H2 (to), kt thc th nghimthu c 9 gam H2O v 22,4 gam cht rn. % s mol ca FeO c trong hn hp X l:

    A. 66,67%. B. 20%. C. 67,67%. D. 40%.Cu 7:Kh hon ton 6,64 gam hn hp gm Fe, FeO, Fe3O4, Fe2O3 cn dng 2,24 lt CO (ktc)Khi lng Fe thu c l

    A. 5,04 gam B. 5,40 gam C. 5,05 gam D. 5,06 gamCu 8.

    Kh hon ton 6,4 gam hn hp CuO v Fe2O3 bng kh H2 thy to ra 1,8 gam nc. Khilng hn hp kim loi thu c l

    A. 4,5 gam B. 4,8 gam C. 4,9 gam D. 5,2 gamCu 9:Kh hon ton 5,64 gam hn hp gm Fe, FeO, Fe3O4, Fe2O3 bng kh CO. Kh i rasau phn ng c dn vo dung dch Ca(OH)2d thy to ra 8 gam kt ta. Khi lng Fethu c l

    A. 4,63 gam B. 4,36gam C. 4,46 gam D. 4,64 gamCu 10:Nung mt mu thp thng c khi lng 10 gam trong O2 d thu c 0,1568 lt kh CO2

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    (ktc). Thnh phn phn trm theo khi lng ca cacbon trong mu thp l:A. 0,82%. B. 0,84%. C. 0,85%. D. 0,86%.

    Cu 11:Ho tan hon ton 2,81 gam h n hp gm Fe2O3, MgO, ZnO trong 500 ml axit H2SO40,1M (va ). Sau phn ng, hn hp mui sunfat khan thu c khi c cn dung dch ckhi lng l

    A. 3,81 gam. B. 4,81 gam. C. 5,81 gam. D. 6,81 gam.Cu 12:Cho 32 gam hn hp gm MgO, Fe2O3, CuO tc dng va vi 300ml dung dchH2SO42M. Khi lng mui thu c l:

    A. 60 gam. B. 80 gam. C. 85 gam. D. 90 gam.Cu 13:Ha tan hon ton 16,0 gam h n hp gm FeO, Fe3O4, Fe2O3 cn dng 300ml dung dchHCl 1,5M thu c m gam mui clorua. Khi lng mui clorua thu c l:

    A. 31,98 gam B. 28,38 gam C. 32,43 gam D. 29,46 gamCu 14:Ha tn 10 gam h n hp bt Fe v Fe2O3 bng dd HCl thu c 1,12 lt kh (ktc) vdung dch A. Cho dung dch A tc dng vi NaOH d, thu c kt ta. Nung kt ta trongkhng kh n khi lng khng i c cht rn c khi lng l:

    A. 11,2 gam. B. 12,4 gam. C. 15,2 gam. D. 10,9 gam.Cu 15 :Nhng mt l Fe kim loi vo cc dung dch mui AgNO3 (1), Al(NO3)3 (2), Cu(NO3)2(3), Fe(NO3)3 (4). Cc dung dch c th phn ng vi Fe l:

    A. 1 v 3 B. 1 v 2 C. 1,3 v 4 D. Tt c.Chia 20 g hn hp X gm Al, Fe, Cu thnh 2 phn bng nhau:- Phn 1: tc dng ht vi dung dch HCl thu c 5,6 lit kh ( ktc)- Phn 2: Cho vo dung dch NaOH d thu c 3,36 lit kh ( ktc). % khi lng Cuc trong hn hp l:

    A. 17% B. 16% C. 71% D. 32%Cu 17:Kh hon ton mt oxit st X nhit cao cn va V lt kh CO ( ktc), sau phn ng thuc 1,68 gam Fe v 0,03 mol kh CO2. Cng thc ca X v gi tr V ln lt l

    A. FeO v 0,672 B. Fe2O3 v 0,448 C. Fe3O4 v 0,448 D. Fe2O3 v 0,672Cu 18:Kh hon ton 16,0g mt oxit st X nhit cao cn va V lt kh CO ( ktc), sau phn ngthu c 11,2 gam Fe. Cng thc ca X v gi tr V ln lt l

    A. FeO v 2,24 B. Fe2O3 v 6,72 C. Fe3O4 v 6,72 D. Fe2O3 v 2,24Cu 19:Kh hon ton 0,02 mol mt oxit st X nhit cao cn va 0,06 lt kh CO ( ktc). Cngthc ca X l

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    A. FeO B. Fe2O3 C. Fe3O4 D. Fe4O3Cu 20:Cho 11 gam hn hp gm Fe v Cu tc dng vi dung dch H2SO4 long (d). Sau phn ngthu c 2,24 lt kh hiro ( ktc), dung dch X v m gam cht rn khng tan. Thnh phn %khi lng ca Cu trong hn hp l

    A. 58,19% B. 50,91% C. 40,0% D. 49,1%Cu 21:Ho tan hon ton 12,8 gam h n hp X gm 3 kim loi Fe, Mg, Cu vo HNO c nng, dthu

    c dung dch Y v 3,36 lt kh NO (kc). C cn dung dch Y thu c m gammui khan. Gi tr m l:

    A. 22,1 gam B. 19,7 gam C. 50,0gam. D. 40,7gamCu 22:Ho tan hon ton 6,72 gam Fe trong 100 ml dung d ch HNO3 4M thu c V lt kh NO (ktc)duy nht. C cn dung dch, thu c m gam mui Fe(NO3)3. Gi tr ca m l:

    A. 14,52 gam B. 24,2 gam C. 29,04 gam D. 9,68 gamCu 23:

    Phn ng no trong cc phn ng sau sinh ra FeSO4?A. Fe + Fe2(SO4)3 B. Fe + CuSO4C. Fe + H2SO4 c, nng D. A v B u ng

    Cu 24:Phn ng no sau y to ra c Fe(NO3)3?

    A. Fe + HNO3 c, ngui B. Fe + Cu(NO3)2C. Fe(NO3)2 + Cl2 D. Fe + Fe(NO3)2

    Cu 25:Trong 3 oxt FeO, Fe2O3, Fe3O4 cht no tc dng vi axt HNO3 cho ra cht kh.

    A. Ch c FeO B. Ch c Fe2O3C. Ch c Fe3O4 D. FeO v Fe3O4

    Cu 26:Cu no ng khi ni v gang?

    A. L hp kim ca Fe c t 6 - 10% C v mt t S, Mn, P, SiB. L hp kim ca Fe c t 2% - 5% C v mt t S, Mn, P, SiC. L hp kim ca Fe c t 0,01% - 2% C v mt t S, Mn, P, SiD. L hp kim ca Fe c t 6% - 10% C v mt lng rt t S, Mn, P, Si

    Cu 27:Ho tan Fe vo dd AgNO3 d, dd thu c cha cht no sau y?

    A. Fe(NO3)2 B. Fe(NO3)3C. Fe(NO2)2, Fe(NO3)3, AgNO3 D. Fe(NO3)3 , AgNO3

    Cu 28:Hn hp A cha 3 kim loi Fe, Ag v Cu dng bt. Cho hn hp A vo dd B ch cha

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    mt cht tan v khuy k cho n khi kt thc phn ng th thy Fe v Cu tan h t vcn li lng Ag ng bng lng Ag trong A. dd B cha cht no sau y?

    A. AgNO3 B. FeSO4 C. Fe2(SO4)3 D. Cu(NO3)2Cu 29.Thuc th no sau y c dng nhn bit cc dd mui , FeCl2, FeCl3, MgCl2, AlCl3 ?

    A. Dd H2SO4 B. Dd HCl C. Dd NaOH D. Dd NaClCu 30: Thi mt lung CO d qua ng s ng hn hp Fe3O4 v CuOnung nng n phn ng hon ton, ta thu c 2,32 g hn hp kim loi. Khthot ra cho vo bnh ng nc vi trong d thy c 5g kt ta trng. Khilng hn hp 2 oxit kim loi ban u l bao nhiu?

    A. 3,12g B. 3,22g C. 4g D. 4,2gCu 31:Ha tn hon ton h n hp gm 0,1 mol Fe2O3 v 0,2 mol FeO vo dd HCl d thu cdd A. Cho NaOH d vo dd A thu c kt ta B. Lc ly kt ta B ri em nung trongkhng kh n khi lng khng i c m(g) cht rn, m c gi tr l

    A. 16g B. 32g C. 48g D. 52gCu 32:Cho 2,52 g mt kim loi tc dng vi dd H2SO4 long to ra 6,84g mui sunfat. Kim loi l

    A. Mg B. Fe C. Cr D. MnCu 33:t chy hon ton 16,8 gam Fe trong kh O 2 cn va 4,48 lt O2 (ktc). to thnhmt xit st. Cng thc phn t ca oxit l cng thc no sau y?

    A. FeO B. Fe2O3 C. Fe3O4 D. Khng xc nh cCu 34:Chia m gam hn hp Fe, Cu lm 2 phn bng nhau:

    Phn 1: Cho tc dng vi axit HCl d th thu c 2,24 lit kh H2 (ktc).Phn 2: Cho tc dng vi axit HNO3 long th thu c 4,48 lit kh NO (ktc). Thnhphn % khi lng kim loi Fe trong hn hp l:

    A. 36,8%. B. 26,6%. C. 63,2%. D. 22,58%.