A is a lighter phenol and B is an aromatic carboxylic acid.... | Chemistry | SolveeIt | Solveeit

Today, August 18

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

sodium bicarbonate

Explanation

Solution

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.
$R \, - \, COOH + NaHCO_3 \rightarrow R \, - \, COONa$
$\hspace30mm +H_2CO_3$