Assume a reaction takes place in a basic solution to form the given products:
MnO4–(aq) + Cl–(aq) MnO2(s) + Cl2(g) (unbalanced)
i. Balance the given half-reactions for atoms and charge. (
MnO4–(aq) → MnO2(s) + 4e–
Cl–(aq) → Cl2(g) + 2e–
ii. Balance the overall reaction.
MnO4–(aq) + 4Cl–(aq) → MnO2(s) + 4Cl2(g)