Answer:
Exploiting the difference in reactivity of the two compounds with a base
Step-by-step explanation:
The separation of benzoic acid and acetanilide using diethyl ether and an aqueous base works by exploiting the difference in reactivity of the two compounds with a base. Benzoic acid reacts with the base to form a water-soluble salt, while acetanilide remains unreacted in the ether layer.
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