Question

Plz help due today!

A student measured the product of a reaction and found that it was 12.7 ml. The theoretical yield was calculated to be 11.5ml. What is the percent error?

Answer 1

Percentage error = ((12.7/11.5)-100%)x 100% = 10.4% (3 s.f.)

Since the measured yield exceeds the theoretical one, this means the error is in excess. Divide the measured yield by the theoretical yield and subtract 100% to find the difference, then multiply by 100% to find the percentage.