A quality-control chemist uses paper chromatography to analyse the colouring mixture in a bath tablet.
| Spot colour | Rf R_f\,Rf value |
|---|---|
| Orange | 0.16 |
| Pink | 0.43 |
| Blue | 0.68 |
| Green | 0.81 |
One component spent the greatest proportion of the experiment held on the chromatography paper.
Give the colour of this component.
113 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.