Consider the reaction,    ${\mathrm{MnO}}_{4\left(\mathrm{aq}\right)}^{-}+{\mathrm{I}}_{\left(\mathrm{aq}\right)}^{-} \to {\mathrm{MnO}}_{2\left(\mathrm{S}\right)} +{\mathrm{I}}_{2\left(\mathrm{S}\right)}$. This equation when balanced in basic medium contains

The balanced equation is $$\begin{gathered} \mathrm{From} \mathrm{the} \mathrm{given} \mathrm{eq}., \\ \mathrm{change} \mathrm{in} \mathrm{ox}. \mathrm{no} \mathrm{of} \mathrm{Mn}=3 \\ \mathrm{change} \mathrm{in} \mathrm{ox}. \mathrm{no} \mathrm{of} \mathrm{I}=1 \\ {\mathrm{MnO}}_{4\left(\mathrm{aq}\right)}^{-}+3{\mathrm{I}}_{\left(\mathrm{aq}\right)}^{-} \to {\mathrm{MnO}}_2+{\mathrm{I}}_2 \\ 2{\mathrm{MnO}}_{4\left(\mathrm{aq}\right)}^{-}+6{\mathrm{I}}_{\left(\mathrm{aq}\right)}^{-}+4{\mathrm{H}}_2{\mathrm{O}}_{\left(\mathrm{l}\right)}\to 2{\mathrm{MnO}}_{2\left(\mathrm{S}\right)}+3{\mathrm{I}}_{2\left(\mathrm{S}\right)}+8{\mathrm{OH}}_{\left(\mathrm{aq}\right)}^{-} \end{gathered}$$