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8.1 Purity, formulations and chromatography

8.1 Purity, formulations and chromatography

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Question 13

A student is analyzing a mixture of food colorings using paper chromatography.

One of the dyes, dye X, has an Rf\text{R}_\text{f}Rf​ value of 0.720.720.72. On the chromatogram, the spot for dye X traveled a distance of 5.4 cm5.4\text{ cm}5.4 cm from the start line.

Calculate the distance traveled by the solvent front in centimeters.

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Markscheme

8.1 Purity, formulations and chromatography Questions

  1. GCSE
  2. /Chemistry
  3. /8.1 Purity, formulations and chromatography

28 exam-style questions on AQA GCSE Chemistry 8.1 Purity, formulations and chromatography, covering 8.1.1 Pure substances, 8.1.2 Formulations, and 8.1.3 Chromatography. Each one has a worked solution and a mark scheme showing where the marks go.

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