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

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Question 7

Methane reacts with steam in an endothermic homogeneous reaction to produce carbon monoxide and hydrogen:

CH4(g)+H2O(g)⇌CO(g)+3H2(g)ΔH=+206 kJ mol−1 \text{CH}_4(\text{g}) + \text{H}_2\text{O}(\text{g}) \rightleftharpoons \text{CO}(\text{g}) + 3\text{H}_2(\text{g}) \quad \Delta H = +206\text{ kJ mol}^{-1} CH4​(g)+H2​O(g)⇌CO(g)+3H2​(g)ΔH=+206 kJ mol−1

Which change increases the equilibrium yield of hydrogen but has no effect on the value of the equilibrium constant KpK_{\text{p}}Kp​?

A

Increase the temperature of the system

B

Decrease the total pressure of the system

C

Add a nickel catalyst to the system

D

Decrease the partial pressure of steam

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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