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5.3 Equilibria

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Question 6
F

Blue anhydrous cobalt chloride paper turns pink when water is added. The pink paper turns blue again when it is warmed gently.

Statement 1: The reaction between cobalt chloride and water is reversible.

Statement 2: Warming the pink paper removes water from it.

Statement 3: The forward and reverse reactions both take in energy from the surroundings.

Which statements are correct?

[1]
A

1 only

B

1 and 2 only

C

2 and 3 only

D

1, 2 and 3

Markscheme

5.3 Equilibria Questions

  1. GCSE
  2. /Chemistry
  3. /5.3 Equilibria

47 exam-style questions on OCR GCSE Chemistry 5.3 Equilibria, covering 5.3.1 Reversible reactions and dynamic equilibrium and 5.3.2 Changing the position of equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.

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