Question:
A chromatography column, packed with silica gel as stationary phase, was used to separate a mixture of compounds consisting of (A) benzanilide (B) aniline and (C) acetophenone. When the column is eluted with a mixture of solvents, hexane: ethyl acetate $(20: 80)$, the sequence of obtained compounds is:
Correct Option: , 3
Solution:
Compounds which are able to form strong $\mathrm{H}$-bond with the stationary phase (silica gel) will come last with the mobile phase.
H-bonding order:
$\therefore$ Sequence of obtained compounds is $(\mathrm{C}, \mathrm{A}, \mathrm{B})$
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