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Published byRuby Powell Modified over 9 years ago
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Reaction Yield
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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
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Percent Yield % Yield = actual yield (experiment) theoretical yield (calculation) × 100 *In general, the higher the yield, the better the results are from the experiment
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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
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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
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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
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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
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