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2 marksAcid/Base Equilibria

CAPE Chemistry Unit 1 · 2006 · Paper 1 · Question 8(a)(ii)

A variety of chromatographic methods can be used to separate mixtures.

Distinguish between a stationary phase and a mobile phase used in chromatography.

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Other parts of this question

  1. 8(a)(i)What is meant by retention time as applied to gas liquid chromatography (GLC)?[1 mark]
  2. 8(a)(iii)Give ONE example EACH of commonly used stationary and mobile phases in GLC.[2 marks]
  3. 8(b)(i)Calculate the Rᶠ values for the TWO samples.[2 marks]
  4. 8(b)(ii)Deduce whether the same red dye is used to make both types of ink. Give TWO reasons for your answer.[3 marks]

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