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1. In thin layer chromatography (TLC), why do you need to use a pencil in marking the spots, origin, and solvent front and not a marker? 2. Why is it necessary to mark the solvent front immediately? 3. Why do you need to ensure that the loading spot is above the solvent level in paper chromatography? 4. Why do different compounds travel different distances on the piece of paper?

1. In thin layer chromatography (TLC), why do you need to use a pencil in marking the spots, origin, and solvent front and not a marker? 2. Why is it necessary to mark the solvent front immediately? 3. Why do you need to ensure that the loading spot is above the solvent level in paper chromatography? 4. Why do different compounds travel different distances on the piece of paper?

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter11: Intermolecular Forces And Liquids
Section11.6: Properties Of Liquids
Problem 1.2ACP
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1. In thin layer chromatography (TLC), why do you need to use a pencil in marking the spots, origin, and solvent front and not a marker?

2. Why is it necessary to mark the solvent front immediately?

3. Why do you need to ensure that the loading spot is above the solvent level in paper chromatography?

4. Why do different compounds travel different distances on the piece of paper?

 

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