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5.2 Controlling reactions

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Question 16
F

A catalyst is added to an exothermic reaction.

What happens to the activation energy and to the overall energy change of the reaction?

[1]
A

Activation energy decreases and energy change decreases.

B

Activation energy decreases and energy change stays the same.

C

Activation energy increases and energy change stays the same.

D

Activation energy stays the same and energy change decreases.

Markscheme

5.2 Controlling reactions Questions

  1. GCSE
  2. /Chemistry
  3. /5.2 Controlling reactions

56 exam-style questions on OCR GCSE Chemistry 5.2 Controlling reactions, covering 5.2.1 Measuring and interpreting rate of reaction, 5.2.2 Factors affecting rate and collision theory, and 5.2.3 Catalysts, activation energy and enzymes. Each one has a worked solution and a mark scheme showing where the marks go.

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