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Which reagent can be used to separate phenol from benzoic acid?

1. Sodium bicarbonate
2. Sodium hydroxide
3. Sodium metal
4. Sodium amide

Correct answer: Sodium bicarbonate

Solution

Sodium bicarbonate can selectively deprotonate benzoic acid, forming its sodium salt, while phenol remains largely unreacted due to its weaker acidity. This difference allows for the separation of phenol from benzoic acid.

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