Thin-Layer Chromatography

Author:Lawrie Ryan & Roger Norris
AS and A Level
IMPORTANT

Important Questions on Thin-Layer Chromatography

MEDIUM
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Analytical Chemistry>Thin-Layer Chromatography> Q 1

A mixture of propanone and hexane was separated on a TLC chromatogram using aluminium oxide as the stationary phase and methylbenzene as the solvent. Which substance would you expect to rise further up the chromatogram? write down your answer.

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IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Analytical Chemistry>Thin-Layer Chromatography> Q 2

TLC can separate mixtures of components. What do we call the mechanism of separation usually at work in TLC?