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

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Question 5

An equilibrium mixture of carbon monoxide, chlorine, and carbonyl chloride is established in a sealed container of fixed volume:

CO(g)+Cl2(g)⇌COCl2(g)ΔH=−108 kJ mol−1 \text{CO}(\text{g}) + \text{Cl}_2(\text{g}) \rightleftharpoons \text{COCl}_2(\text{g}) \quad \Delta H = -108 \text{ kJ mol}^{-1} CO(g)+Cl2​(g)⇌COCl2​(g)ΔH=−108 kJ mol−1

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

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

A

The total pressure of the mixture

B

The mole fraction of carbon monoxide

C

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

D

The partial pressure of chlorine

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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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