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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 14

A food scientist uses paper chromatography to investigate a yellow food dye, Y.

In the conditions used, dye Y has an Rf R_f\,Rf​ value of 0.35.

Calculate the distance moved by the spot of dye Y if the solvent front has moved 7.6 cm.

Give your answer to 1 decimal place.

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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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