If a reaction has an actual yield of 5 grams and a theoretical yield of 10 grams, what is the percent yield?

1 Answer
Aug 24, 2016


The percent yield is #50%#


Let's define those three terms before we get started:

  • The percent yield of a reaction is the ratio of actual yield to the theoretical yield times one-hundred percent.

  • The actual yield is the mass of product that was obtained in an experiment.

  • The theoretical yield is the mass of product calculated from the amounts of reactants used in the experiment; the amount of product that you should get in theory.

Now, to calculate the percent yield we use the equation below:

#"Percent Yield" = ("actual yield")/("theoretical yield") xx 100%#

We know the actual yield and the theoretical yield, so all we have to do is divide the numbers and multiply that value by #100%#:

#"Percent Yield" = (5 cancel"grams")/(10 cancel"grams")xx100% = 50%#

Thus, the percent yield is #50%#