Question detail

Calculate the percentage yield if 50 grams of product was obtained from a theoretical yield of 80 grams.

Try the question, check the answer, then read the explanation to understand the curriculum point.

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At a glance

MCQ

Type

practice

Style

Topic

Use of amount of substance in relation to masses of pure substances

Question

A. 62.5%
B. 75%
C. 80%
D. 50%

Answer

62.5%

Explanation

Percentage yield is calculated as (actual yield / theoretical yield) x 100, so (50 g / 80 g) x 100 = 62.5%.

Common mistake

Confusing moles with mass

Students often confuse the concept of moles with mass, thinking that mass is the same as the amount of substance.

Remember that moles measure the amount of substance, while mass is measured in grams. Use the relationship between mass and moles to clarify this distinction.

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