What is the principle of paper chromatography( also thin layer chromatography) when a more polar solvent is added, the one with higher Rf value is more polar or less polar?

Question

kira_yamato · Answer

Paper chromatography separates mixtures by their difference in solubilities in a given solvent. So if a more polar solvent is added, the one with the higher Rf value traveled more, so should be more polar

anonymous · Answer

thanx much.

anonymous · Answer

why would ethonal be used more instead of water? does this have to do with polar and non polar substances?

aaronq · Answer

i would say because it evaporates faster than water