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8.1 Purity, formulations and chromatography

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Question 12
F

Why should the spot of ink placed on the start line be as small as possible?

[1]
A

So the ink does not dissolve in the solvent

B

So the separated spots do not overlap

C

So the solvent moves up the paper faster

D

So the RfR_fRf​ value of each dye is smaller

Markscheme

8.1 Purity, formulations and chromatography Questions

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

40 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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