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6.3 Dynamic equilibria

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Question 20
F

Which sequence is most suitable for preparing pure, dry ammonium sulfate crystals from dilute ammonia solution and dilute sulfuric acid?

[1]
A

Mix unmeasured volumes of the two solutions with indicator, then filter off the precipitate

B

Add excess ammonia solution, filter off the excess, then heat the filtrate to dryness

C

Titrate, repeat using the same volumes without indicator, then crystallise and dry

D

Evaporate both solutions separately, mix the two solids, then wash them with water

Markscheme

6.3 Dynamic equilibria Questions

  1. GCSE
  2. /Chemistry
  3. /6.3 Dynamic equilibria

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.

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