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3.2 Methods of separating and purifying substances

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Question 17
H

On a chromatogram, the solvent front travels 9.0 cm. Dye X has Rf=0.72R_f=0.72Rf​=0.72. How far does X travel?

[1]
A

8.28 cm8.28\,\mathrm{cm}8.28cm

B

6.48 cm6.48\,\mathrm{cm}6.48cm

C

9.72 cm9.72\,\mathrm{cm}9.72cm

D

12.5 cm12.5\,\mathrm{cm}12.5cm

Markscheme

3.2 Methods of separating and purifying substances Questions

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

48 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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