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5.2 Reversible reactions and equilibria

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Question 10
H

In an ammonia plant, only 15% of the nitrogen and hydrogen entering the reactor is converted into ammonia on each pass: N2+3H2⇌2NH3\mathrm{N_{2} + 3H_{2} \rightleftharpoons 2NH_{3}}N2​+3H2​⇌2NH3​. The ammonia is removed and the unreacted gases are recycled into the reactor. Fresh nitrogen is supplied at 28 tonnes per hour, with the matching amount of hydrogen. No gas is lost from the plant.

What mass of ammonia is produced per hour once the plant is running steadily? (Relative atomic masses: H = 1, N = 14)

[1]
A

4.2 tonnes

B

5.1 tonnes

C

34 tonnes

D

17 tonnes

Markscheme

5.2 Reversible reactions and equilibria Questions

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

45 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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