Theoretical yield is calculated based on the stoichiometry of the chemical equation. The actual yield is experimentally determined. The percent yield is determined by calculating the ratio of actual yield to theoretical yield.
Why do you never get the theoretical yield?
Reasons for not achieving the theoretical yield. Possible reasons for not achieving the theoretical yield. Reaction may stop short of completion so that reactants remain unreacted. There may be competing reactions that give other products and therefore reduce the yield of the desired one.
How do you find theoretical mass?
- Once again, we need to work out which is the limiting reagent first. ...
- Now that we know the limiting reagent and its moles, we know how many moles of the product will form. ...
- Use the mass = molecular weight * mole equation to determine the theoretical mass of the product.
