Figure shows the main stages of the Haber process.
Figure: The main stages of the Haber process, from the purified raw materials to liquid ammonia

Use Figure to name the process that takes place at X.
Explain why the gas mixture leaving the reactor is cooled.
Give one reason why the unreacted nitrogen and hydrogen are recycled.
Complete the word equation for the reaction in the reactor.
nitrogen + hydrogen ⇌\rightleftharpoons⇌
39 exam-style questions on AQA GCSE Chemistry 10.4 The Haber process and the use of NPK fertilisers, covering 10.4.1a The Haber process, 10.4.1b Equilibrium and rate in the Haber process, and 10.4.2 Production and uses of NPK fertilisers. Each one has a worked solution and a mark scheme showing where the marks go.