Complete and balance the following equations, and identify the oxidizing and reducing agents:

(a) Cr₂O₇^2-(aq) + I^-(aq) → Cr³⁺(aq) + IO₃^- (aq) (acidic solution)

(b) MnO₄^- (aq) + CH₃OH(aq)  → Mn²⁺(aq)  + HCO₂H(aq)  (acidic solution)

(c) I₂(s) + OCl^-(aq)  → IO₃^- (aq) + Cl^-(aq)  (acidic solution)

(d) As₂O₃(s) + NO₃^-(aq)  → H₃AsO₄(aq)  + N₂O₃(aq)  (acidic solution)

(e) MnO₄^-(aq)  + Br^-(aq)  → MnO₂(s) + BrO₃^-(aq)  (basic solution)

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