CH-471
Chromatography and Rf values
Chemistry · Secondary 3 · Medium · Chromatography and Rf values
A student separates food dyes using paper chromatography in ethanol. Which statement about the dyes is correct?
- The dyes must be of different colours.
- The dyes must be soluble in ethanol.
- The dyes must have different densities.
- The dyes must have identical Rf values.
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