Question detail
What is the percentage yield if 50 g of product was obtained from a theoretical yield of 80 g?
Try the question, check the answer, then read the explanation to understand the curriculum point.
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. Here, (50 g / 80 g) x 100 = 62.5%.
Common mistake
Confusing Avogadro's Constant
Students often confuse the Avogadro constant with the number of particles in a specific mass of a substance instead of understanding it as a fixed number of particles in one mole.
Remember that Avogadro's constant (6.02 x 10^23) represents the number of atoms, molecules, or ions in one mole of any substance, regardless of its mass.
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