Question

Indicate the substance that is oxidized and the substance that is reduced in the following reaction. Write the overall balanced equation.

MnO₄^-1 (aq) + Ni (s) ->  MnO₂ (s) + Ni⁺² (aq)

Answer 1

$Ni_{s}$ is being oxidized

$MnO_{4} ^{-1}$ is being reduced

$MnO_4^{-1}+2 Ni_{(s)} -> MnO2 _{(s)} + Ni+2 _{(aq)}$