Question

A chemistry student synthesized 25 grams of aspirin theoretically, but only obtained 20 grams practically in the lab. Calculate the percent yield of aspirin.

Answer 1

The percent yield is calculated by dividing the actual  practical  yield by the theoretical yield, and then multiplying by 100.Percent Yield =  Actual Yield / Theoretical Yield  x 100In this case, the actual yield is 20 grams, and the theoretical yield is 25 grams.Percent Yield =  20 grams / 25 grams  x 100Percent Yield = 0.8 x 100Percent Yield = 80%The percent yield of aspirin in this case is 80%.