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5.1 Monitoring chemical reactions

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Question 65
F

Which statement about percentage yield and atom economy is correct?

[1]
A

A reaction with an atom economy of 100% always has a percentage yield of 100%.

B

Percentage yield can be worked out from the balanced equation alone.

C

Increasing the percentage yield of a reaction also increases its atom economy.

D

Atom economy can be worked out from the balanced equation alone.

Markscheme

5.1 Monitoring chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /5.1 Monitoring chemical reactions

152 exam-style questions on OCR GCSE Chemistry 5.1 Monitoring chemical reactions, covering 5.1.1 The technique of titration, 5.1.2 Theoretical mass, percentage yield and atom economy, 5.1.3 Concentration of a solution in mol/dm3, 5.1.4 Concentration calculations and titration results, 5.1.5 Molar gas volume and volumes of gases in reactions, and 5.1.6 Choosing a reaction pathway. Each one has a worked solution and a mark scheme showing where the marks go.

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