CH-385
Chromatography and Rf values
Chemistry · Secondary 3 · Medium · Chromatography and Rf values
Chromatography is carried out on a black ink using water as the solvent. After some time, three coloured spots appear above the baseline.
What does this show about the black ink?
What does this show about the black ink?
- It is a pure substance made of one dye only.
- It is a mixture of three different dyes.
- The dyes are insoluble in water.
- The solvent front did not move during the experiment.
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