The solubility product of $\mathrm{Agl}$ at $25^{\circ} \mathrm{C}$ is $1.0 \times 10^{-16} \mathrm{~mol}^2…

The solubility product of $\mathrm{Agl}$ at $25^{\circ} \mathrm{C}$ is $1.0 \times 10^{-16} \mathrm{~mol}^2 \mathrm{~L}^{-2}$. The solubility of $\mathrm{Agl}$ is $10^{-4} \mathrm{~N}$ solution of $\mathrm{KI}$ at $25^{\circ} \mathrm{C}$ is approximately (in $\mathrm{mol} \mathrm{L}^{\mathrm{1}}$ )
  1. $1.0 \times 10^{-16}$
  2. $1.0 \times 10^{-12}$
  3. $1.0 \times 10^{-10}$
  4. $1.0 \times 10^{-8}$

Solution

$\mathrm{Agl} \rightleftharpoons \mathrm{Ag}^{+}+1^{-}$
$1.1 \times 10^{-16}=s^2$
Solubility of $\mathrm{Ag}^{-}=1.0 \times 10^{-8}$
Solubllity of $\mathrm{Agl}$ in KI solution:
$\begin{aligned}
& =1.0 \times 10^{-8} \times 10^{-4} \\
& =1.0 \times 10^{-12} \mathrm{~mol} \mathrm{~L}^{-1}
\end{aligned}$

Asked in: NEET 2003

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