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Chemical equilibria, Le Chatelier’s principle and Kc​

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Question 6

For the industrial gas-phase equilibrium shown below, which combination of temperature and pressure would result in the greatest equilibrium yield of the products?

A2(g)+B2(g)⇌2AB(g)+B(g)ΔH=+83 kJ mol−1 \text{A}_2(g) + \text{B}_2(g) \rightleftharpoons 2\text{AB}(g) + \text{B}(g) \quad \Delta H = +83\text{ kJ mol}^{-1} A2​(g)+B2​(g)⇌2AB(g)+B(g)ΔH=+83 kJ mol−1
A

Low pressure and high temperature

B

High pressure and high temperature

C

Low pressure and low temperature

D

High pressure and low temperature

Markscheme

Chemical equilibria, Le Chatelier’s principle and Kc Questions

  1. A Level
  2. /Chemistry
  3. /Chemical equilibria, Le Chatelier’s principle and Kc

24 exam-style questions on AQA A Level Chemistry Chemical equilibria, Le Chatelier’s principle and $K_c$, covering Chemical equilibria and Le Chatelier's principle and Equilibrium constant $K_c$ for homogeneous systems. Each one has a worked solution and a mark scheme showing where the marks go.

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