MCQ
On passing $HCl$ gas in saturated solution of $NaCl$, the solubility of $NaCl$
- Aincreases
- ✓decreases
- Cremains unchanged
- D$NaCl$ decomposes
✓
Answer
Correct option: B.
decreases
b
When hydrogen chloride gas $( HCl )$ is circulated through the saturated solution. $HCl$ anc respective ions as:
When hydrogen chloride gas $( HCl )$ is circulated through the saturated solution. $HCl$ anc respective ions as:
$NaCl \rightleftharpoons Na ^{+}+ Cl ^{-}$
$HCl \rightleftharpoons H ^{+}+ Cl ^{-}$
The concentration of $Cl ^{-}$ions increases considerably in solution due to ionization $HCl$. decrease due to common ion effect and $NaCl$ get precipitate out.
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