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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 26

A student mixes aqueous solutions of potassium iodide and lead(II) nitrate in a beaker. A brilliant yellow precipitate of lead(II) iodide, PbI2\text{PbI}_2PbI2​, is formed.

Describe the experimental steps the student should perform to obtain a pure, dry sample of lead(II) iodide from the mixture in the beaker.

[3]
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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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