Limiting Reagents 
Percentage Yield Practice Problems
Directions: Solve the following problems solving for the answers in grams. 
Click here for reference to a periodic table!
Please have a calculator handy!
1. For the balanced equation shown below, if the reaction of 16.4 grams of C6H5F produces a 53.6% yield, how many grams of H2O would be produced?
C6H5F+4O2=>6CO+2H2O+HF


2. For the balanced equation shown below, if the reaction of 69.9 grams of C produces a 84.0% yield, how many grams of Na2S would be produced? 
Na2SO4+2C=>Na2S+2CO2


3. For the balanced equation shown below, if the reaction of 77.9 grams of C2H3O2Cl produces a 68.6% yield, how many grams of CO2 would be produced?
2C2H3O2Cl+3O2=>4CO2+2H2O+2HCl


4. For the balanced equation shown below, if the reaction of 1.02 grams of O2 produces a 69.9% yield, how many grams of CO2 would be produced? 
4C2H3F+11O2=>8CO2+6H2O+2F2

5. For the balanced equation shown below, if the reaction of 24.4 grams of C2H3Cl produces a 68.0% yield, how many grams of CO2 would be produced?
4C2H3Cl+11O2=>8CO2+6H2O+2Cl2


6. For the balanced equation shown below, if the reaction of 33.7 grams of S produces 46.8 grams of SO2, what is the percent yield?
S+O2=>SO2

7. For the balanced equation shown below, if the reaction of 21.2 grams of Ag2 produces 2.55 grams of CO2, what is the percent yield?
2Ag2 + CO3=>4Ag+2CO2+O2

8. For the balanced equation shown below, if the reaction of 1.31 grams of O2 produces 1.08 grams of CO, what is the percent yield?
4C2H3F+7O2=>8CO+6H2O+2F2

9. For the balanced equation shown below, if the reaction of 41.0 grams of N2O produces a 40.8% yield, how many grams of N2 would be produced ?
2N2O=>2N2+O2

10. For the balanced equation shown below, if the reaction of 64.2 grams of O2 produces a 64.8% yield, how many grams of H2O would be produced ?
2H2S+3O2=>2SO2+2H2O
click here to check your answers!
for more practice problems, feel free to check out this site, http://science.widener.edu/svb/tutorial/percentyieldcsn7.html