Percent Yield

Front

What is percent yield?

Back

Percent yield is a measure of the efficiency of a chemical reaction, calculated as (actual yield / theoretical yield) x 100%.

Front

What is the theoretical yield?

Back

The theoretical yield is the maximum amount of product that can be produced from a given amount of reactants, based on stoichiometric calculations.

Front

What is the actual yield?

Back

The actual yield is the amount of product that is actually obtained from a chemical reaction, which is often less than the theoretical yield.

Front

What is a limiting reactant?

Back

The limiting reactant is the substance that is completely consumed in a chemical reaction, limiting the amount of product formed.

Front

What happens to the actual yield if some product is lost during purification?

Back

The actual yield will be less than the theoretical yield due to the loss of product.

Front

True or False: A chemical reaction stops before the limiting reagent is used up.

Back

False.

Front

What effect do competing reactions have on actual yield?

Back

Competing reactions can consume reactants, leading to a lower actual yield than expected.

Front

If a scientist calculates a theoretical yield of 12.3 grams and collects 10.1 grams, what is the percent yield?

Back

82%.

Front

How do impurities in the limiting reactant affect the yield?

Back

Impurities can reduce the effective amount of the limiting reactant, leading to a lower actual yield.

Front

What is the formula for calculating percent yield?

Back

Percent Yield = (Actual Yield / Theoretical Yield) x 100%.