1. Reaction Yield

2. Theoretical vs Actual Yield Theoretical yield is the maximum amount of product that can be produced from a given amount of reactant Calculated from a balanced chemical equation using stoichiometry Hint: amount of product from limiting reactant Actual yield is the amount of product produced when the chemical reaction is carried out in an experiment Hint: will be given in the problem, or taken from data in a lab

3. Percent Yield % Yield = actual yield (experiment) theoretical yield (calculation) × 100 *In general, the higher the yield, the better the results are from the experiment

4. Steps 1. Identify what is given in the problem. 2. The product given is the actual yield, calculate the theoretical yield (from LR) 3. Calculate the percent yield

5. Determine the theoretical yield of silver chromate if 0.500 g of silver nitrate is used to react with potassium chromate. If 0.455 g of silver chromate is obtained from an experiment, calculate the percent yield. Example 1

6. Carbon tetrachloride was prepared by reacting 100.0 g of carbon disulfide and 100.0 g of chlorine gas. Calculate the theoretical and percent yield if 65.0 g of carbon tetrachloride was obtained from the reaction. CS 2 + Cl 2 CCl 4 + S 2 Cl 2 Example 2

7. Silver bromide was prepared by reacting 200.0 g of magnesium bromide and 100.0 g of silver nitrate. Calculate the theoretical and percent yield if 100.0 g of silver bromide was obtained from the reaction. Example 3