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

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Question 3

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

CO(g)+2H2(g)⇌CH3OH(g)ΔH=−91 kJ mol−1 \text{CO}(\text{g}) + 2\text{H}_2(\text{g}) \rightleftharpoons \text{CH}_3\text{OH}(\text{g}) \quad \Delta H = -91 \text{ kJ mol}^{-1} CO(g)+2H2​(g)⇌CH3​OH(g)ΔH=−91 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 carbon monoxide

B

The total pressure of the mixture

C

The amount, in moles, of carbon monoxide

D

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

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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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