why the liquid flow faster when adding 100% Acetone instead of (15% of Ch2Cl2 and 85%...
why the liquid flow faster when adding 100% Acetone
instead of (15% of Ch2Cl2 and 85% heptane) in column
chromatography?
thanks!
Homework Answers
Acetone is highly polar less denser than the combination (15% of CH2Cl2 and 85% heptane). It will break the adsorbed compounds-stationary phase bonding and collect it through it's way to bottom flask. Another reason is viscosity - acetone has lesser friction (lower viscosity value) than the combination (15% of CH2Cl2 and 85% heptane) from physics point of view also.
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