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Section 4: Percent Yield

Percent Yield

1.
What is the maximum amount of product that can be produced from a given amount of reactant?
A)percent yield
B)theoretical yield
C)actual yield
D)mole ratio
2.
What is the percent yield of CO2 if a reaction using 10.0 g CO with excess O2 produces 12.8 g CO2?
2CO + O2 → 2CO2
A)76.40%
B)78.10%
C)81.50%
D)84.40%
3.
The reaction of 5.0 grams of fluorine with excess chlorine produced 5.6 grams of ClF3. What percent yield of ClF3 was obtained?
Cl2 + 3F2 → 2ClF3
A)58%
B)69%
C)76%
D)86%
4.
What is the percent yield for the reaction between 9.8 grams of Ca(OH)2 and 9.8 grams of H3PO4 when 2.5 grams of
Ca3(PO4)2 are actually obtained?
3Ca(OH)2 + 2H3PO4 → Ca3(PO4)2 + 6H2O
A)19%
B)9%
C)27%
D)36%
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