Question

A is a lighter phenol and B is an aromatic carboxylic acid . Separation of a mixture of A and B can be carried out easily by using a solution of
A. sodium hydroxide
B. sodium sulphate
C. calcium chloride
D. sodium bicarbonate

Answer 1

Correct Answer - D
Carboxylic acids are soluble in sodium bicarbonate but phenol are not dissolve in it , so they are separated because carboxylic acid react with `NaHCO_(3)` and form sodium carboxylate
`R-COOH + NaHCO_(3) to R-COO^(-)Na^(+) + H_(2)CO_(3)`