• Chemical reactions in the real world don’t always go exactly as planned on paper.
  • In the course of an experiment, many things will contribute to the formation of less product than would be predicted.
  • Studying how much of a compound is produced in any given reaction is an important part of cost control.
  • The percent yield is the ratio of the actual yield to the theoretical yield, expressed as a percentage.
  • The actual yield is experimentally determined.
  • The theoretical yield is calculated based on the stoichiometry of the chemical equation.
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