Fusion of $\mathrm{MnO}_{2}$ with KOH in presence of $\mathrm{O}_{2}$ produces a salt $W$. Alkaline

Question

Fusion of $\mathrm{MnO}_{2}$ with KOH in presence of $\mathrm{O}_{2}$ produces a salt $W$. Alkaline solution of $W$ upon electrolytic oxidation yields another salt $X$. The manganese containing ions present in $W$ and $X$, respectively, are $Y$ and $Z$. Correct statement(s) is(are)\

Professor PC Thomas Classes · Answer

$(\mathrm{a}, \mathrm{b}, \mathrm{c}): 2 \mathrm{MnO}_{2}+4 $On electrolysis of $\mathrm{K}_{2} \mathrm{MnO}_{4}, \mathrm{MnO}_{4}^{2-}$ gets oxidised to $\mathrm{MnO}_{4}^{-}$.\ $$$$ $\mathrm{K}_{2} \mathrm{MnO}_{4}$ in neutral or acidic medium undergoes disproportionation reaction. $$ \mathrm{} $$ $\mathrm{K}_{2} \mathrm{MnO}_{4}$ is green in colour and $\mathrm{KMnO}_{4}$ is purple in colour. Both are tetrahedral in shape involving $p \pi-d \pi$ bonding.\ \