Learning objective

(chemistry only) Explain why yield may be reduced if reactants take part in unexpected reactions.

Read the explanation, check the common trap, then practise with flashcards and questions.

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At a glance

Flashcards

Questions

Topic

Yield and atom economy of chemical reactions (chemistry only)

Subtopic

Percentage yield

AQA GCSE ChemistryQuantitative chemistry

Study support

Understand this objective

Short explanation

(chemistry only) Explain why yield may be reduced if reactants take part in unexpected reactions. This objective belongs to Percentage yield within Yield and atom economy of chemical reactions (chemistry only) for AQA GCSE Chemistry 8462. A strong answer should use chemistry only accurately, explain the chemistry behind the statement, and connect the idea back to the exact command in the objective. When revising, separate this point from neighbouring Chemistry ideas by naming the relevant particle, substance, process, calculation, observation, or structure before giving the final conclusion.

Key concepts

yieldunexpected reactions

Why it matters

This objective helps connect Percentage yield to exam-style questions, flashcards, and revision notes for Yield and atom economy of chemical reactions (chemistry only).

Common mistakes

1 linked

Misunderstanding Unexpected Reactions: To fix this, students should remember that unexpected reactions can divert reactants away from forming the desired product, leading to both a lower yield of the desired product and the formation of by-products. Keep the correction anchored to Percentage yield; check formula, substitution, calculation, final answer, and unit where relevant.

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