drill: cacl 2 + f 2 cacl 2 + na cacl 2 + kno 3 cacl 2 + k 2 so 4
TRANSCRIPT
![Page 1: Drill: CaCl 2 + F 2 CaCl 2 + Na CaCl 2 + KNO 3 CaCl 2 + K 2 SO 4](https://reader031.vdocuments.mx/reader031/viewer/2022012406/56649f2c5503460f94c47088/html5/thumbnails/1.jpg)
Drill:•CaCl2 + F2
•CaCl2 + Na
•CaCl2 + KNO3
•CaCl2 + K2SO4
![Page 2: Drill: CaCl 2 + F 2 CaCl 2 + Na CaCl 2 + KNO 3 CaCl 2 + K 2 SO 4](https://reader031.vdocuments.mx/reader031/viewer/2022012406/56649f2c5503460f94c47088/html5/thumbnails/2.jpg)
Stoichiometry•The quantitative study of chemical
reactions
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Stoichiometric Steps• Set up & balance rxn
• Change stuff given to moles
• Change moles given to ask
• Change what’s asked for to the proper unit
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Step 1• Determine products of a
reaction if they are not given
• Balance the reaction
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Step 2• Use molar conversion to
change whatever is given to moles
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Step 3• Use the molar ratio from
the balanced reaction to convert the moles of what is given to the moles of what’s asked for.
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Step 4• Use molar conversions to
change the moles of what is asked for to the proper unit
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Calculate the volume of NH3 formed at STP
when 6.0 kg of H2 react with excess N2
to form NH3
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Drill: Calculate the number of molecules
of oxygen gas required to burn
3.0 ng of C5H10O5
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Chm II: Calculate the mass of Lead(II)iodide formed when 66.2 g of
lead (II)nitrate is combined with excess
potassium iodide
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Chm II: Calculate the mass of MgCO3 formed when 18.4 g of MgBr2 is
combined with a solution containing
excess K2CO3.
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Chm II: Calculate the volume at STP of CO2 formed when 16.8 g of MgCO3 is decomposed creating CO2 & MgO.
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Limiting Reactant• The reactant that gets
used up
• The reactant that determines the amount of product formed
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Excess Reactant•The reactant that does not get used up
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Stoichiometry with Multiple Reagents
• Perform same steps for all reactants
• Choose least amount of product
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Calculate the mass of glucose (C6H12O6)
formed when 880 g of carbon dioxide is
combined with 720 g of water in photosynthesis
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Chm II: Calculate the mass of BaSO4 formed when 104 g of BaCl2 is combined with 250 mL 1.00 M(mole/L) K2SO4
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Calculate the mass of solid formed when 104 g of BaCl2 is combined with 250 mL 1.00 M
K2SO4
![Page 19: Drill: CaCl 2 + F 2 CaCl 2 + Na CaCl 2 + KNO 3 CaCl 2 + K 2 SO 4](https://reader031.vdocuments.mx/reader031/viewer/2022012406/56649f2c5503460f94c47088/html5/thumbnails/19.jpg)
Calculate the mass of BaSO4 formed when 26.1 g of Ba(NO3)2 is
combined with 120 mL 1.00 M K2SO4
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Drill: Calculate the # of molecules of NH3
formed whenof 4.0 g of H2 react with 1.12 mL of N2
gas at STP.
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Theoretical Yield•The amount determined through stoichiometry
•The amount solved for on paper
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Experimental Yield•The amount obtained in the lab
•Actual yield
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Percent yield% Yield =
(Exp/Theo) x 100 %
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68 g NH3 was obtained in lab when 140 g of N2 reacts with excess H2. Calculate percent yield.
![Page 25: Drill: CaCl 2 + F 2 CaCl 2 + Na CaCl 2 + KNO 3 CaCl 2 + K 2 SO 4](https://reader031.vdocuments.mx/reader031/viewer/2022012406/56649f2c5503460f94c47088/html5/thumbnails/25.jpg)
510 g PH3 was obtained when 0.62 kg of P4 reacts with
excess H2. Calculate percent yield.
![Page 26: Drill: CaCl 2 + F 2 CaCl 2 + Na CaCl 2 + KNO 3 CaCl 2 + K 2 SO 4](https://reader031.vdocuments.mx/reader031/viewer/2022012406/56649f2c5503460f94c47088/html5/thumbnails/26.jpg)
Chm II Drill
•Problem: 41
•Page 115
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Determine the volume of O2 released at STP
when 32 kg of Fe2O3 is purified with an 80.0
% yield making Fe & O2
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Calculate the volume of oxygen gas at STP required to burn 12 kg of erythrose (C4H8O4)
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Drill: Determine the molecules of PH3
formed at STP when 1.24 g P4 reacts with
672 mL of H2:
![Page 30: Drill: CaCl 2 + F 2 CaCl 2 + Na CaCl 2 + KNO 3 CaCl 2 + K 2 SO 4](https://reader031.vdocuments.mx/reader031/viewer/2022012406/56649f2c5503460f94c47088/html5/thumbnails/30.jpg)
Calculate the mass of BaSO4 formed when 41.6 g of barium chloride is added
to 250 ml of 0.40 M potassium sulfate giving a
50.0 % yield:
![Page 31: Drill: CaCl 2 + F 2 CaCl 2 + Na CaCl 2 + KNO 3 CaCl 2 + K 2 SO 4](https://reader031.vdocuments.mx/reader031/viewer/2022012406/56649f2c5503460f94c47088/html5/thumbnails/31.jpg)
Calculate the mass of CaSO4 formed when
2.00 g of calcium bromide is added to
75 mL of 0.40 M sodium sulfate:
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Chm II Homework
•Problem: 105
•Page 120
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Chm II
•Test on Wednesday
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Determine the volume of CO2 formed at STP
when 1.62 g Ca(HCO3)2 is
decomposed forming CaO, CO2, & H2O:
![Page 35: Drill: CaCl 2 + F 2 CaCl 2 + Na CaCl 2 + KNO 3 CaCl 2 + K 2 SO 4](https://reader031.vdocuments.mx/reader031/viewer/2022012406/56649f2c5503460f94c47088/html5/thumbnails/35.jpg)
3.67 g of lead(II)bromide was obtained when 33.1 g of
lead(II)nitrate was added to 1500 mL 0.10 M potassium bromide. Calculate the %
yield & the molarity of all ions remaining in the solution.
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Drill: 3.67 g of PbBr2 was obtained when
33.1 g of Pb(NO3)2 was added to 1500 mL of
0.10 M NaBr.Calculate the % yield.
![Page 37: Drill: CaCl 2 + F 2 CaCl 2 + Na CaCl 2 + KNO 3 CaCl 2 + K 2 SO 4](https://reader031.vdocuments.mx/reader031/viewer/2022012406/56649f2c5503460f94c47088/html5/thumbnails/37.jpg)
Calculate the volume of oxygen
gas at STP required to burn 50.0 mg
C5H8O2:
![Page 38: Drill: CaCl 2 + F 2 CaCl 2 + Na CaCl 2 + KNO 3 CaCl 2 + K 2 SO 4](https://reader031.vdocuments.mx/reader031/viewer/2022012406/56649f2c5503460f94c47088/html5/thumbnails/38.jpg)
Calculate the volume of gaseous product formed
when 2.24 L of F2 is bubbled through a 375
mL solution 0.20 M KCl:
![Page 39: Drill: CaCl 2 + F 2 CaCl 2 + Na CaCl 2 + KNO 3 CaCl 2 + K 2 SO 4](https://reader031.vdocuments.mx/reader031/viewer/2022012406/56649f2c5503460f94c47088/html5/thumbnails/39.jpg)
Calculate the volume in mL of gaseous
products formed at STP when 6.0 g of
C2H6 is burned in excess oxygen:
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33.1 g of Pb(NO3)2 was added to 1500
mL 0.10 M KI. Calculate mass of
PbI2 formed.
![Page 41: Drill: CaCl 2 + F 2 CaCl 2 + Na CaCl 2 + KNO 3 CaCl 2 + K 2 SO 4](https://reader031.vdocuments.mx/reader031/viewer/2022012406/56649f2c5503460f94c47088/html5/thumbnails/41.jpg)
Calculate the volume of gaseous product formed
when 4.2 kg of MgCO3 is heated with a 75 % yield:
![Page 42: Drill: CaCl 2 + F 2 CaCl 2 + Na CaCl 2 + KNO 3 CaCl 2 + K 2 SO 4](https://reader031.vdocuments.mx/reader031/viewer/2022012406/56649f2c5503460f94c47088/html5/thumbnails/42.jpg)
Calculate the mass of liquid product formed when 6.0 g of sodium
hydroxide is added to a 250 mL solution 0.40 M
hydrochloric acid:
![Page 43: Drill: CaCl 2 + F 2 CaCl 2 + Na CaCl 2 + KNO 3 CaCl 2 + K 2 SO 4](https://reader031.vdocuments.mx/reader031/viewer/2022012406/56649f2c5503460f94c47088/html5/thumbnails/43.jpg)
33.1 g of lead(II)nitrate was added to 1500 mL
0.10 M potassium iodide. Calculate mass
of solid product formed.
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An 30.0 g unknown sample (containing only C, H, & O) was burned in excess
oxygen yielding 66 g CO2 & 36 g H2O. Calculate its
empirical formula :
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An 240 g unknown sample (containing only C, H, S, &
O) was burned in excess oxygen yielding 352 g CO2, 144 g H2O, & 128 g, SO2.
Calculate its empirical formula :
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Calculate the mass of solid product formed
when 3.31 g of Pb(NO3)2 is added to a 75.0 mL solution 0.20 M KI:
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Drill•Convert 66.2 mg lead(II)nitrate to atoms
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Drill• 20.0 g of solid sodium
hydroxide is added to 800.0 mL of 0.50 M hydrochloric acid. Calculate volume of water formed.
![Page 49: Drill: CaCl 2 + F 2 CaCl 2 + Na CaCl 2 + KNO 3 CaCl 2 + K 2 SO 4](https://reader031.vdocuments.mx/reader031/viewer/2022012406/56649f2c5503460f94c47088/html5/thumbnails/49.jpg)
Name the Following:
BaCl2 Mn2O3
SF2 NH3
CaSO4 (NH4)3PO3
Fe(NO3)2 KClO3
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Derive formulas for
Sodium hydroxide
Calcium carbonate
Iron(III)phosphate
Dinitrogen tetroxide
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Make conversions:
•64 kg SO2 to mL gas
•11.2 L NH3 to atoms
•180 km/hr to cm/s
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7.2 g Ca(HCO3)2 was synthesized when 7.0 g of CaO, 2.24 L of CO2 at STP, & 9.0 g H2O are combined. Calculate % yield.
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Predict all for:•Aqueous iron(III)chloride and aqueous lead(II)nitrate are combined
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Predict all for:•Fluorine gas is bubbled through aqueous aluminum chloride
![Page 55: Drill: CaCl 2 + F 2 CaCl 2 + Na CaCl 2 + KNO 3 CaCl 2 + K 2 SO 4](https://reader031.vdocuments.mx/reader031/viewer/2022012406/56649f2c5503460f94c47088/html5/thumbnails/55.jpg)
Predict all for:•Ethane (C2H6) is burned in excess oxygen
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Predict all for:•Solid barium hydroxide is added to a solution of hydroiodic acid