Paper Chromatography Question for ChemLab

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I'm having some trouble understanding the process of solving this problem...any help would be greatly appreciated!

You are given a sample of several compounds to seperate by paper chromatography. You draw a pencil ling exactly 1.0 cm from the bottom of the paper, and place a spot of sample on it. You dry the sample, then develop it in a solvent. When the chromatogram is taken out of the solvent, the paper is wet up to "F" cm from the bottom of the sheet. The compound you are interested in shows up as a spot "X" cm from the bottom of the paper.

F = 8.4
X = 7.1

How far did the compound move?
In the same, how far did the solvent move?
What is the Rf factor for the compound?

Answers (1)

  • Anonymous
    Rating:4 stars

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