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3.2 Methods of separating and purifying substances

3.2 Methods of separating and purifying substances

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Question 19

Sodium carbonate solution and calcium chloride solution were reacted together completely.

The result was a mixture containing a precipitate of calcium carbonate in a solution of sodium chloride.

Describe how to obtain:

  • a pure, dry sample of solid calcium carbonate from the mixture
  • a pure, dry sample of sodium chloride crystals from the mixture
[4]
Markscheme

3.2 Methods of separating and purifying substances Questions

  1. GCSE
  2. /Chemistry
  3. /3.2 Methods of separating and purifying substances

107 exam-style questions on Edexcel GCSE Chemistry 3.2 Methods of separating and purifying substances, covering 3.2.1 Pure substances and mixtures, 3.2.2 Techniques for separating mixtures, 3.2.3 Paper chromatography and Rf values, and 3.2.4 Making water potable. Each one has a worked solution and a mark scheme showing where the marks go.

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