Question detail
A chemical reaction produces 50 g of product A from 100 g of reactants. Calculate the percentage yield of product A.
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
A chemical reaction produces 50 g of product A from 100 g of reactants. Calculate the percentage yield of product A.
Answer
The answer is 50 %.
Explanation
This uses Percentage Yield because the objective is about (chemistry only) Identify the desired product when calculating atom economy. The reasoning belongs to Atom economy 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 Desired Product
Students often misidentify the desired product when calculating atom economy, leading to incorrect calculations.
Carefully read the question to determine which product is specified as the desired product before proceeding with the atom economy calculation.
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