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5.3 Equilibria

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Question 16
H

Carbon monoxide reacts with steam to make hydrogen.

CO(g)+H2O(g)⇌CO2(g)+H2(g) \mathrm{CO(g) + H_{2}O(g) \rightleftharpoons CO_{2}(g) + H_{2}(g)} CO(g)+H2​O(g)⇌CO2​(g)+H2​(g)

The forward reaction is exothermic.

Statement 1: Increasing the pressure increases the amount of hydrogen at equilibrium.

Statement 2: Increasing the temperature decreases the amount of hydrogen at equilibrium.

Statement 3: Adding more steam increases the amount of hydrogen at equilibrium.

Which statements are correct?

[1]
A

1 and 2 only

B

1 and 3 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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