A laboratory is developing a paper chromatography method for a mixture containing two textile dyes, A and B.
The same type of chromatography paper was used with each solvent.
| Solvent | Rf R_f\,Rf value of dye A | Rf R_f\,Rf value of dye B |
|---|---|---|
| P | 0.34 | 0.39 |
| Q | 0.71 | 0.46 |
Which solvent would separate the spots of dyes A and B more clearly?
Give a reason for your answer.
Explain the difference between the Rf R_f\,Rf values of dye A in the two solvents.
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.