Chemistry - Ionic Equilibrium Question with Solution | TestHub

The phenomenon in which the addition of an ion common to two solutes causes precipitation or reduces ionization is known as common ion effect.

$\therefore {\mathrm{K}}_{\mathrm{s}\mathrm{p}\left(\mathrm{A}\mathrm{g}\mathrm{C}\mathrm{l}\right)}=\mathrm{S}\left(\mathrm{S}+0.1\right)$

$\because \mathrm{S}\ll 0.1$

$\therefore \mathrm{S}+0.1\mathrm{ }\approx 0.1$

$\therefore 1.6\times {10}^{-10}=\mathrm{S}\times 0.1$

$\therefore \mathrm{S}=1.6\times {10}^{-9}\mathrm{ }\mathrm{M}$