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6-2.Equilibrium-II (Ionic Equilibrium)
medium
What is the molar solubility of :- $Ag_2CO_3 (K_{sp} = 4 \times 10^{-13})$ in $0.1\, M\,Na_2CO_3$ solution?
A
$10^{-6}$
B
$10^{-7}$
C
$2 \times 10^{-6}$
D
$2 \times 10^{-7}$
Solution
$A{g_2}C{O_3}(s) \rightleftharpoons \mathop {2A{g^ + }}\limits_{(2s)} + \mathop {CO_3^{ – 2}}\limits_{(s)} $
$\mathrm{Na}_{2} \mathrm{CO}_{3} \rightarrow\left[\mathrm{CO}_{3}^{-2}\right]=0.1$
$\mathrm{K}_{\mathrm{sp}}=\left[\mathrm{Ag}^{+}\right]^{2} \times\left[\mathrm{CO}_{3}^{-2}\right]$
$4 \times 10^{-13}=(2 s)^{2} \times(s+0.1)$
$ \downarrow $
Neglected
$s=10^{-6}$
Standard 11
Chemistry
