AnswersLA-Chemistry ALimiting Reactant and Percent Yield

Limiting Reactant and Percent Yield Answers

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3

A 115.0-g sample of oxygen was produced by heating 400.0 g of potassium chlorate.2KClO3 2KCI + 3O2 What is the percent yield of oxygen in this chemical reaction?Use .

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A
69.63%
B
73.40%
C
90.82%
D
136.2%
4

Consider the balanced equation. N2 + 3H2 2NH3 What is the percent yield of NH3 if the reaction of 26.3 g of H2 produces 79.0 g of NH3?Use .

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A
17.8%
B
33.3%
C
35.7%
D
53.4%
8

The equation represents the combustion of sucrose (C12H22O11). C12H22O11 + 12O2 12CO2 + 11H2OIf there are 10.0 g of sucrose and 8.0 g of oxygen, how many moles of sucrose are available for this reaction?

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A
0.029 mol
B
0.250 mol
C
0.351 mol
D
3.00 mol
9

Consider the combustion reaction for acetylene. 2C2H2(l) + 5O2(g) 4CO2(g) + 2H2O(g)If the acetylene tank contains 37.0 mol of C2H2 and the oxygen tank contains 81.0 mol of O2, what is the limiting reactant for this reaction?

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A
C2H2
B
O2
C
CO2
D
H2O
13

What is the percent yield of ferrous sulfide if the actual yield is 220.0 g and the theoretical yield is 275.6 g?Use .

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A
12.52%
B
55.60%
C
79.83%
D
87.91%

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