May/June 2026 Paper 21

2026 · 40 questions · 40 parts · 40 marks

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40ChromatographyMedium1 mark
A chemical mixture is separated using paper chromatography. The chromatogram is shown.
chromatography paper strip with a solvent front line near the top, a baseline near the bottom, and two spots between them, a higher spot and a lower spot closer to the baseline
Which statements are correct?
  1. 1
    The spot nearest the solvent front has an value greater than 0.50.
  2. 2
    Insoluble compounds rise with the solvent front.
  3. 3
    The lower spot is a less soluble substance than the higher spot.