3
QuizMultiple Choice

Limiting Reactant and Percent Yield

Question 3 • FL-2003350-Chemistry 1 Honors

Which statement correctly describes the relationship between reactant and yield?

Answer
A
The actual yield is calculated from the amount of the excess reactant present.
B
The actual yield is calculated from the amount of the limiting reactant present.
C
The theoretical yield is calculated from the amount of the excess reactant present.
D
The theoretical yield is calculated from the amount of the limiting reactant present.

Explanation

The theoretical yield is the maximum amount of product predicted by the balanced chemical equation. It is calculated using the limiting reactant, because that reactant runs out first and determines how much product can form. The excess reactant does not determine the maximum yield, and actual yield is the amount of product actually obtained in the experiment.

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