Y10T3W3L2 % Purity and Yield

Multiple Choice

2Fe₂O₃ + C → Fe + 3CO₂

You add 28 grams of carbon. You find the actual yield to be 81.2 grams of CO₂. What is the percent yield of CO₂? (Hint: calculate theoretical yield of CO₂ first)

• 79.2%

• 209.2%

• 6435%

• 15.5

Multiple Choice

Theoretical yield = 73g
Actual yield = 62g
Calculate the percent yield.

• 1.16%
• 116%
• 85%
• 76%

Multiple Choice

CH₄ + 2O₂ → CO₂ + 2H₂O

24 grams of CH₄ was added to the above reaction. Calculate the theoretical yield of CO₂.

• 66 grams

• 132 grams

• 33 grams

• 8.72