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6.2 Reversible reactions and dynamic equilibrium

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Question 20
H

Dinitrogen tetroxide is colourless and nitrogen dioxide is dark brown. The pressure on the equilibrium mixture is increased.

N2O4(g)⇌2NO2(g)\text{N}_2\text{O}_4\text{(g)} \rightleftharpoons 2\text{NO}_2\text{(g)}N2​O4​(g)⇌2NO2​(g)

What happens to the colour of the mixture, and why?

[1]
A

It gets darker, because equilibrium shifts towards NO2\text{NO}_2NO2​

B

It gets darker, because equilibrium shifts towards N2O4\text{N}_2\text{O}_4N2​O4​

C

It gets paler, because equilibrium shifts towards NO2\text{NO}_2NO2​

D

It gets paler, because equilibrium shifts towards N2O4\text{N}_2\text{O}_4N2​O4​

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6.2 Reversible reactions and dynamic equilibrium Questions

  1. GCSE
  2. /Chemistry
  3. /6.2 Reversible reactions and dynamic equilibrium

109 exam-style questions on AQA GCSE Chemistry 6.2 Reversible reactions and dynamic equilibrium, covering 6.2.1 Reversible reactions, 6.2.2 Energy changes and reversible reactions, 6.2.3 Equilibrium, 6.2.4 The effect of changing conditions on equilibrium, 6.2.5 The effect of changing concentration, 6.2.6 The effect of temperature changes on equilibrium, and 6.2.7 The effect of pressure changes on equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.

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