Question

$MnO^{2-}_{4}$ (1 mole) in neutral aqueous medium is disproportionate to

• A. $2/3$mole of $MnO^{-}_{4}$ and $1/3$ mole of $MnO_{2}$
• B. $1/3$mole of $MnO^{-}_{4}$ and $2/3$ mole of $Mn O_{2}$
• C. $1/3$mole of $Mn_{2}O^{-}_{4}$ and $1/3$ mole of $Mn O_{2}$
• D. $2/3$mole of $Mn_{2}O^{-}_{4}$ and $1/3$ mole of $MnO_{2}$

Answer 1

Answer: (A)

Mn$O_{4}^{2-}$ in neutral aqueous medium is disproportionate to
$\frac{2}{3}$ mole of $MnO^{-}_{4}$ and $\frac{1 }{3}$ mole of $MnO_{2}$.