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Controlling reactions

Controlling reactions

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Question 14

Granules of calcium carbonate react with dilute hydrochloric acid. What change would decrease the rate of this reaction?

A

Cooling the hydrochloric acid.

B

Using calcium carbonate powder instead of granules.

C

Using a more concentrated solution of hydrochloric acid.

D

Adding a compatible catalyst to the mixture.

Markscheme

Controlling reactions Questions

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

31 exam-style questions on OCR GCSE Chemistry Controlling reactions. Each one has a worked solution and a mark scheme showing where the marks go.

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