Question

In a chemical reaction, 365 grams of Fe2O3 were expected to be produced according to the balanced chemical equation Fe2O3 + 3CO → 2Fe + 3CO2. However, the measured yield of Fe2O3 was 278 grams. What is the percent yield for this reaction?

A) 23.1%
B) 75.9%
C) 43.8%
D) 90.3%

Answer 1

To calculate the percent yield, compare the actual yield to the theoretical yield. The theoretical yield is determined based on the balanced chemical equation.

Step-by-step explanation:

In order to calculate the percent yield, we need to compare the actual yield to the theoretical yield. The theoretical yield is the amount of product expected to be produced based on the balanced chemical equation. In this case, the balanced equation is Fe2O3 + 3CO → 2Fe + 3CO2.

Theoretical yield = (moles of Fe2O3) × (molar mass of Fe2O3) = (278 g Fe2O3) × (1 mole Fe2O3 / 159.70 g Fe2O3) = 1.743 moles Fe2O3

Percent yield = (actual yield / theoretical yield) × 100% = (278 g / 1.743 moles) × 100% = 159.3%