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10.4 The Haber process and the use of NPK fertilisers

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Question 11

In a pilot plant, nitrogen and hydrogen react to make ammonia. The unreacted nitrogen and hydrogen are recycled back into the reactor.

The equation for the reaction is:

N2+3H2⇌2NH3\text{N}_2 + 3\text{H}_2 \rightleftharpoons 2\text{NH}_3N2​+3H2​⇌2NH3​

atom economy=relative formula mass of desired producttotal relative formula mass of all products×100\text{atom economy} = \dfrac{\text{relative formula mass of desired product}}{\text{total relative formula mass of all products}} \times 100atom economy=total relative formula mass of all productsrelative formula mass of desired product​×100

A technician claims that recycling the nitrogen and hydrogen increases the atom economy. Evaluate this claim.

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10.4 The Haber process and the use of NPK fertilisers Questions

  1. GCSE
  2. /Chemistry
  3. /10.4 The Haber process and the use of NPK fertilisers

71 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.

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