Theoretical Yield Formula - Solved Examples Practice Questions In theory we can always predict the amount of desired product that will be formed at the end of a chemical reaction. Assuming that the reaction will go to completion we can predict this amount of product from the stoichiometric coefficients of the balanced chemical equation. Theoretical Yield Formula Questions.
To determine the theoretical yield of any chemical reaction multiply the number of moles by the molecular weight.
Now we will solve example with theoretical yield formula to make it more clear. Assuming that the reaction will go to completion we can predict this amount of product from the stoichiometric coefficients of the balanced chemical equation. Grams product grams reactant x 1 mol reactantmolar mass of reactant x mole ratio productreactant x molar mass of product1 mol product For a theoretical yield example assume we have 20 grams of hydrogen gas and hydrogen gas has a molar weight of 2. It involves adding numerical coefficients called the stoichiometric coefficients before the reagents and products so that the number of atoms or molecules on the reactant side and the product side become equal.