To express the efficiency of a reaction you can calculate the percent yield using this formula. The percentage yield is calculated using this equation. The per cent yield formula is used to determine the percentage of the theoretical yield that was formed in a reaction.
Reactants often yield quantities of products that are less than those calculated based on the formulated chemical reaction.
When you measure the amount of that reactant that you will be using you can calculate the amount of product. Percentage yield is a concept used in chemistry which compares the theoretical yield of an experiment with the actual results observed. Theoretical Yield Formula Questions. We represent the amount we produced as percent yield which represents the percent of the anticipated yield we actually produced.