Sodium chloride is purified by passing hydrogen chloride gas in a… - Vidyadip

MCQ

Sodium chloride is purified by passing hydrogen chloride gas in an impure solution of sodium chloride. It is based on

A
Buffer action
✓
Common ion effect
C
Association of salt
D
Hydrolysis of salt

✓

Answer

Correct option: B.

Common ion effect

b
Purification of $NaCl$ by the passage of $HCl$ through brine is based on the common ion e $HCl$ is a strong electrolyte and provides an ion $\left( Cl ^{-}\right)$ that is common to that provided by Thus, the ionization of weak electrolytes is suppressed.

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