Chromatography F324 4.0 / 5 based on 1 rating ? ChemistrySpectroscopyA2/A-levelOCR Created by: KathCreated on: 01-06-14 13:24 What does a solid stationary phase separate compounds by? adsorption 1 of 7 What does a liquid stationary phase separate by? relative solubility 2 of 7 Name the stationary phase in thin layer chromatography? thin layer of adsorbent on inert support 3 of 7 Why is it important to seal the jar containing the TLC plate? to slow the evaporation of the solvent from the TLC plate 4 of 7 What is the correct definition of an Rf value? distance moved by component divided by distance moved my solvent front 5 of 7 What is the definition of retention time? the time taken for a particular compound to travel through the column to the detector, from injection to leaving the column 6 of 7 What is the benefit of coupling gas chromatography with mass spectrometry gas chromatography separates compounds and mass spectra can be compared to a database 7 of 7
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