At 30° C, the solubility of Ag 2 CO 3( K sp =8 × 10-12) would be maximum in 1 litre of

Question

At 30° C, the solubility of Ag 2 CO 3( K sp =8 × 10-12) would be maximum in 1 litre of (A) 0.05 M Na 2 CO 3 (B) 0.05 M AgNO 3 (C) Pure water (D) 0.05 M NH 3

Tardigrade Admin · Accepted Answer

Ag 2 CO 3 leftharpoons 2 Ag ++ CO 32- Ag ++ NH 3 longrightarrow underset textSoluble complex[ Ag ( NH 3)2]+ So, in pressence of NH 3, Ag +ion concentration in the equilibrium is reduced, hence according to Le-chatelier principle, solubility is increased.

Q. At $3 0^{\circ} C$ , the solubility of $A g_{2} C O_{3} (K_{s p} = 8 \times 1 0^{- 12})$ would be maximum in $1$ litre of

$0.05 M N a_{2} C O_{3}$

$0.05 M A g N O_{3}$

Pure water

$0.05 M N H_{3}$

$A g_{2} C O_{3} ⇌ 2 A g^{+} + C O_{3}^{2 -}$
$A g^{+} + N H_{3} ⟶ Soluble complex [A g (N H_{3})_{2}]^{+}$
So, in pressence of $N H_{3}, A g^{+}$ ion concentration in the equilibrium is reduced, hence according to Le-chatelier principle, solubility is increased.

Q. At 30∘C, the solubility of Ag2​CO3​(Ksp​=8×10−12) would be maximum in 1 litre of

0.05MNa2​CO3​

0.05MAgNO3​