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Equilibrium constant $K_p$ 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?

The partial pressure of nitrogen dioxide

The total pressure of the mixture

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

The mole fraction of dinitrogen tetroxide

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

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