CH-448
Chromatography and Rf values
Chemistry · Secondary 3 · Easy · Chromatography and Rf values
A student separates a mixture of food dyes using paper chromatography with water as the solvent. One dye travels 3.0 cm from the base line while the solvent front travels 7.5 cm. What is the Rf value of this dye?
- 0.25
- 0.40
- 2.5
- 4.5
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