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5.3 Equilibria

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Question 14
H

For which reaction does increasing the pressure have no effect on the position of equilibrium?

[1]
A

N2(g)+3H2(g)⇌2NH3(g)\mathrm{N_{2}(g) + 3H_{2}(g) \rightleftharpoons 2NH_{3}(g)}N2​(g)+3H2​(g)⇌2NH3​(g)

B

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

C

2NO2(g)⇌N2O4(g)\mathrm{2NO_{2}(g) \rightleftharpoons N_{2}O_{4}(g)}2NO2​(g)⇌N2​O4​(g)

D

Fe3O4(s)+4H2(g)⇌3Fe(s)+4H2O(g)\mathrm{Fe_{3}O_{4}(s) + 4H_{2}(g) \rightleftharpoons 3Fe(s) + 4H_{2}O(g)}Fe3​O4​(s)+4H2​(g)⇌3Fe(s)+4H2​O(g)

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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