In an ammonia plant the gases pass through the reactor too quickly to reach equilibrium. Over several months the iron catalyst slowly becomes less active. The temperature and pressure are not changed.
Statement 1: the percentage of ammonia in an equilibrium mixture at these conditions is unchanged
Statement 2: a mixture at these conditions would take longer to reach equilibrium
Statement 3: less ammonia leaves the reactor per hour
Which statements are correct?
3 only
1 and 2 only
2 and 3 only
1, 2 and 3
43 exam-style questions on Edexcel GCSE Chemistry 6.3 Dynamic equilibria, covering 6.3.1 The Haber process as a reversible reaction, 6.3.2 Conditions and rate in industrial equilibria, and 6.3.3 Fertilisers and the preparation of ammonium sulfate. Each one has a worked solution and a mark scheme showing where the marks go.