Question

The commercial salt is purified by passing :

• A. $H_{2}S$ gas through an alkaline solution ofsalt
• B. HCI gas through a saturated solution of salt
• C. $H_2$ gas through a solution of salt
• D. $C{I}_2$ gas through a saturated solution of salt

Answer 1

The correct option is B HCI gas through a saturated solution of salt

The common table salt is prepared by passing HCI gas through a saturated solution of salt. The precipitation is due to common ion effect.

$\underset{Saltsolution}{NaCl}+H^{+}+C{l}^{-}⟶\underset{ppt}{NaCl}$

Hence, option B is correct.