$\mathrm{HgCl}_{2}$ and $\mathrm{I}_{2}$ both when dissolved in water containing $\mathrm{I}^{-}$ion

Question

$\mathrm{HgCl}_{2}$ and $\mathrm{I}_{2}$ both when dissolved in water containing $\mathrm{I}^{-}$ions, the pair of species formed is\

Professor PC Thomas Classes · Answer

(b) : $\mathrm{HgCl}_{2(a q)}+4 \mathrm{I}_{(a q)}^{-} \longrightarrow \mathrm{HgI}_{4(a q)}^{2-}+2 \mathrm{Cl}_{(a q)}^{-}$ $\mathrm{I}_{2(\mathrm{~s})}+\mathrm{I}_{(a q)}^{-} \longrightarrow \mathrm{I}_{3(a q)}^{-}$\