Chemistry - Redox Reactions Question with Solution | TestHub

In alkaline medium:
Related Theory In acidic medium: ${\mathrm{MnO}}_4^{-}+8{\mathrm{H}}^{+}+5e^{-}⟶$ ${\mathrm{Mn}}_2+4{\mathrm{H}}_2\mathrm{O}$ In basic medium: ${\mathrm{MnO}}_4^{-}+e^{-}\to {\mathrm{MnO}}_4^{2-}$ In neutral medium: ${\mathrm{MnO}}_4^{-}+4{\mathrm{H}}^{+}+3e^{-}⟶$ ${\mathrm{MnO}}_2+2{\mathrm{H}}_2\mathrm{O}$