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Equilibrium constant Kp​ for homogeneous systems (A-level only)

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Question 1

An equilibrium mixture is prepared in a container of fixed volume.

N2O4(g)⇌2NO2(g)ΔH=+57 kJ mol−1 \text{N}_2\text{O}_4(\text{g}) \rightleftharpoons 2\text{NO}_2(\text{g}) \quad \Delta H = +57 \text{ kJ mol}^{-1} N2​O4​(g)⇌2NO2​(g)ΔH=+57 kJ mol−1

The temperature of this mixture is decreased and the mixture is allowed to reach a new equilibrium.

Which of the following is greater for the new equilibrium than for the original equilibrium?

A

The partial pressure of nitrogen dioxide

B

The total pressure of the mixture

C

The value of the equilibrium constant, KpK_{\text{p}}Kp​

D

The mole fraction of dinitrogen tetroxide

Markscheme

Equilibrium constant Kp for homogeneous systems (A-level only) Questions

  1. A Level
  2. /Chemistry
  3. /Equilibrium constant Kp for homogeneous systems (A-level only)

31 exam-style questions on AQA A Level Chemistry Equilibrium constant $K_p$ for homogeneous systems (A-level only), covering Equilibrium constant $K_p$ for homogeneous systems (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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