Its possible for percent yield to be over 100 which means more sample was recovered from a reaction than predicted. Chemists have to be concerned with just how completely their reactants react to form products. It is calculated to be the experimental yield divided by theoretical yield multiplied by 100.
Percentage yield of NaCl 850 grams 993 grams 100.
The actual yield is the amount of product that is actually formed when the reaction is carried out in the laboratory. The theoretical yield is a term used in chemistry to describe the maximum amount of product that you expect a chemical reaction could create. The percent yield is the ratio of the actual yield to the theoretical yield expressed as a percentage. Calculate the theoretical yield of the process.