Chemistry · Oct / Nov 2024 · Paper 11 · Question 39
5070Chromatography
A mixture of four coloured dyes is analysed by chromatography. The result is shown. [chromatogram diagram with solvent front and baseline] Which change allows the four coloured dyes to be seen separately?
- AMeasure the Rf values of the spots carefully.
- BRun the chromatogram for a longer time.
- CRun the chromatogram using a different solvent.
- DUse a locating agent.
As printed in the paper
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Correct answer: C. Run the chromatogram using a different solvent.
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