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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 44

In a recycling facility for lithium-ion battery waste, cobalt is recovered from the cathode material as an aqueous solution of cobalt(II) chloride, CoCl2(aq)\text{CoCl}_2(\text{aq})CoCl2​(aq).

Describe how a technician could obtain a pure, dry sample of cobalt(II) chloride crystals from this aqueous solution.

[2]
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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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