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1) How does increasing the polarity of the developing solvent affect the Rf of a compound on a silica gel TLC plate 2

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1) How does increasing the polarity of the developing solvent affect the Rf of a compound on a silica gel TLC plate

2.Describe one way colorless compounds can be visualized on a TLC plate.

3.Indicate whether TLC (thin-layer chromatography) or column chromatography is more appropriate for the following:

a)This is an analytical method for separating compounds of a mixture.

b)The solvent front moves downward.

c)This is a preparative method for separating a mixture of compounds.