Measuring the amount of product formed gives us the actual yield. A 100 per cent yield means that no product has been lost while a 0 per cent yield means that no product has. With these two pieces of information you can calculate the percent yield using the percent-yield formula.
The overall percentage yield for the synthesis would be equal to.
Yield frac Actualyield Theoreticalyield times 100 The. The formula for the percentage yield calculation as found in the data booklet is. PERCENT PURITY 100 x. Percentage yield is a concept used in chemistry which compares the theoretical yield of an experiment with the actual results observed.