Balance the following half-reaction occurring in basic solution. MnO₂(s)$\to$ Mn(OH)₂(s) A) MnO₂(s)+ 2H₂O( $\ell$ )+ 2e^-$\to$ Mn(OH)₂(s)+ 2OH^-(aq) B) MnO₂(s)+ 2H₂O( $\ell$ )+ 4e^-$\to$ Mn(OH)₂(s)+ (OH)₂^-(aq) C) MnO₂(s)+ H₂²⁺(aq)+ 2e^-$\to$ Mn(OH)₂(s) D) MnO₂(s)+ H₂(g)$\to$ Mn(OH)₂(s)+ 2e^- E) MnO₂(s)+ 2H₂O( $\ell$ )$\to$Mn(OH)₂(s)+ 2OH^-(aq)

Question

Quizplus · Accepted Answer

In basic solution, the half-reaction is balanced by adding water molecules to balance oxygen, hydroxide ions to balance hydrogen, and electrons to balance charge. Option A correctly balances the half-reaction with 2 water molecules, 2 hydroxide ions, and 2 electrons.

Balance the Following Half-Reaction Occurring in Basic Solution →\to→ Mn(OH)2(s) A) MnO2(s)+ 2H2O

Balance the Following Half-Reaction Occurring in Basic Solution $\to$ Mn(OH)₂(s)
A) MnO₂(s)+ 2H₂O