Theoretical yield Actual yield100 Here is the method. Percentage yield mass of actual yield mass of theoretical yield 100 Lets assume that you obtained an actual yield of 850 grams. Mass of product molecular weight of product moles of limiting reagent in reaction stoichiometry of product where.
So to stop you from wondering how to find theoretical yield here is the theoretical yield formula.
KnownActual yield 149 gTheoretical yield 157. P e r c e n t y i e l d a c t u a l y i e l d t h e o r e t i c a l y i e l d 100 Chemical reaction equations give the ideal stoichiometric relationship among reactants and products. Next determine the percentage yield. Multiply by 100 to convert to a percentage.