Question detail
In a reaction, the theoretical yield of a product is 80 g, but only 64 g is obtained. Calculate the percentage yield of the product.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Yield and atom economy of chemical reactions (chemistry only)
Question
In a reaction, the theoretical yield of a product is 80 g, but only 64 g is obtained. Calculate the percentage yield of the product.
Answer
The answer is 80 %.
Explanation
This uses Percentage Yield because the objective is about (chemistry only) Use ratios, fractions and percentages in yield calculations. (MS 1c). The reasoning belongs to Percentage yield within Yield and atom economy of chemical reactions (chemistry only), so it should not be confused with nearby quantitative ideas such as mass, moles, concentration, yield, atom economy, or gas volume unless those are named in the objective. Use the focus term chemistry only to keep the answer aligned with AQA GCSE Chemistry 8462 Unit 4.3.
Common mistake
Confusing Actual and Theoretical Yield
Students often confuse actual yield with theoretical yield when calculating percentage yield.
Always identify the actual yield (what was obtained) and the theoretical yield (maximum possible) separately before performing the calculation.
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