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3.3 Yield and atom economy of chemical reactions

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Question 12
H

A company can make compound Y by pathway 1 or by pathway 2. Figure shows the two pathways.

Figure: Two pathways for making compound Y

image

a.

Pathway 2 has two steps. Explain why the overall percentage atom economy of pathway 2 is lower than the percentage atom economy of its first step.

[2]
b.

Use Figure to explain which pathway wastes fewer resources.

[3]
Markscheme

3.3 Yield and atom economy of chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /3.3 Yield and atom economy of chemical reactions

39 exam-style questions on AQA GCSE Chemistry 3.3 Yield and atom economy of chemical reactions, covering 3.3.1a Percentage yield, 3.3.1b Theoretical mass of a product, 3.3.2a Atom economy, and 3.3.2b Choosing a reaction pathway. Each one has a worked solution and a mark scheme showing where the marks go.

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