Balance each of the following skeletal equations by using oxidation and reduction half-reactions. All the reactions take place in basic solution. Identify the oxidizing agent and reducing agent in each reaction.

Production of chlorite ions from dichlorine heptoxide:

Cl2O7(g) +H2O2(aq) → ClO2(^-) (aq) + O2(g)

Action of permanganate ions on sulfide ions:

MnO4(^-) (aq) + S(^2-) (aq) → S(s) + MnO2(s)

Reaction of hydrazine with chlorate ions:

N2H4(g) + ClO3(^-) (aq) → NO(g) + Cl(^-) (aq)

Reaction of plumbate ions and hypochlorite ions:

Pb(OH)4(^2-) (aq) + ClO(^-) (aq) → PbO2(s) + Cl(^-) (aq)