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5.2 Reversible reactions and equilibria

5.2 Reversible reactions and equilibria

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Question 1

In the industrial manufacturing of sulfuric acid, sulfur dioxide gas (SO2\text{SO}_2SO2​) is reacted with oxygen gas (O2\text{O}_2O2​) to produce sulfur trioxide (SO3\text{SO}_3SO3​) in the presence of a catalyst.

The chemical equation for this reaction is:

2SO2(g)+O2(g)⇌2SO3(g) 2\text{SO}_2(\text{g}) + \text{O}_2(\text{g}) \rightleftharpoons 2\text{SO}_3(\text{g}) 2SO2​(g)+O2​(g)⇌2SO3​(g)

State the meaning of the ⇌ \rightleftharpoons\,⇌ symbol in this equation.

[1]
Markscheme

5.2 Reversible reactions and equilibria Questions

  1. GCSE
  2. /Chemistry
  3. /5.2 Reversible reactions and equilibria

38 exam-style questions on Edexcel GCSE Chemistry 5.2 Reversible reactions and equilibria, covering 5.2.1 Reversible reactions and dynamic equilibrium, 5.2.2 The Haber process, and 5.2.3 Changing the position of a dynamic equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.

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