試題詳解

22. A chemist wishes to separate benzoic acid from 4-hydroxybenzaldehyde. Which is the best method to achieve this separation?
(A) Partitioning the mixture between diethyl ether and water.
(B) Partitioning the mixture between diethyl ether and 1 M aqueous NaHCO₃.
(C) Partitioning the mixture between diethyl ether and 1 M aqueous NaOH.
(D) Partitioning the mixture between diethyl ether and 1 M aqueous HCl.
(E) Recrystallizing the mixture in diethyl ether.