(B) The common table salt $(NaCl)$ is purified by passing $HCl$ gas through a saturated solution of salt.This process is based on the common ion effec

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$HCl$ gas through a saturated solution of salt

(B) The common table salt $(NaCl)$ is purified by passing $HCl$ gas through a saturated solution of salt.This process is based on the common ion effect,where the increase in the concentration of $Cl^-$ ions forces the equilibrium to shift towards the precipitation of $NaCl$.The reaction is: $NaCl(aq) + HCl(g) \to NaCl(s) + H^+(aq) + Cl^-(aq)$.

Class 11 Chemistry 6-2.Equilibrium-II (Ionic Equilibrium)Common ion effect

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The commercial salt is purified by passing

AIIMS 2009 All AIIMS

A
$H_2S$ gas through an alkaline solution of salt
B
$HCl$ gas through a saturated solution of salt
C
$H_2$ gas through a solution of salt
D
$Cl_2$ gas through a saturated solution of salt

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6-2.Equilibrium-II (Ionic Equilibrium)

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Common ion effect

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AIIMS 2009 Paper All AIIMS years →

Assertion : Addition of $NH_4OH$ to an aqueous solution of $BaCl_2$ in the presence of $NH_4Cl$ (excess) precipitates $Ba(OH)_2$.
Reason : $Ba(OH)_2$ is insoluble in water.

MediumAIIMS 2005

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The following equilibrium exists in aqueous solution: $CH_3COOH \rightleftharpoons CH_3COO^{-} + H^{+}$. If dilute $HCl$ is added without a change in temperature,then the:

Easy

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Aqueous ammonia is used instead of an aqueous solution of $NaOH$ to precipitate $Al^{+3}$ ions as $Al(OH)_3$ because:

Easy

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Addition of which chemical will decrease the hydrogen ion concentration of an acetic acid solution?

Easy

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Assertion $(A) :-$ When a small amount of strong acid or strong base is added to pure water,its $pH$ undergoes a change.
Reason $(R) :-$ Addition of an acid or base increases the degree of ionisation of water.

Medium

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The commercial salt is purified by passing

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Assertion : Addition of $NH_4OH$ to an aqueous solution of $BaCl_2$ in the presence of $NH_4Cl$ (excess) precipitates $Ba(OH)_2$.Reason : $Ba(OH)_2$ is insoluble in water.

The following equilibrium exists in aqueous solution: $CH_3COOH \rightleftharpoons CH_3COO^{-} + H^{+}$. If dilute $HCl$ is added without a change in temperature,then the:

Aqueous ammonia is used instead of an aqueous solution of $NaOH$ to precipitate $Al^{+3}$ ions as $Al(OH)_3$ because:

Addition of which chemical will decrease the hydrogen ion concentration of an acetic acid solution?

Assertion $(A) :-$ When a small amount of strong acid or strong base is added to pure water,its $pH$ undergoes a change.Reason $(R) :-$ Addition of an acid or base increases the degree of ionisation of water.

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Assertion : Addition of $NH_4OH$ to an aqueous solution of $BaCl_2$ in the presence of $NH_4Cl$ (excess) precipitates $Ba(OH)_2$.
Reason : $Ba(OH)_2$ is insoluble in water.

Assertion $(A) :-$ When a small amount of strong acid or strong base is added to pure water,its $pH$ undergoes a change.
Reason $(R) :-$ Addition of an acid or base increases the degree of ionisation of water.