Reaction Pathways — Unit test

Question 13 • FL-2003350-Chemistry 1 Honors

Which statement correctly describes the actual yield and the theoretical yield of a reaction?

Answer

The actual yield is calculated from the reactant amounts, but the theoretical yield must be measured for each instance of a reaction.

The actual yield is calculated from the amount of the limiting reactant, and the theoretical yield is calculated from the amount of the excess reactant.

The actual yield depends on the reaction conditions, but the theoretical yield varies only with reactant amounts.

The actual yield represents the maximum yield possible, and the theoretical yield assumes perfect reaction conditions.

Explanation

The actual yield is the amount of product actually obtained, so it can change with reaction conditions such as temperature, side reactions, or product loss. The theoretical yield is the maximum amount predicted by stoichiometry from the quantities of reactants available. Therefore, “the actual yield depends on the reaction conditions, but the theoretical yield varies only with reactant amounts” is correct.

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