Question detail
Calculate 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. 100%
Answer
62.5%
Explanation
Percentage yield is calculated using the formula percentage yield = (actual yield / theoretical yield) x 100. Here, percentage yield = (50 g / 80 g) x 100 = 62.5%.
Common mistake
Confusing Ratios
Students often confuse mole ratios with mass ratios when balancing equations, leading to incorrect calculations.
To avoid this mistake, always identify whether you are working with moles or masses and use the correct ratios from the balanced equation.
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