For the following oxidation-reduction reactions, identify the half reactions and label them as oxidation or reduction: a. Cu(s) + Ni²+ (aq)

For the following oxidation-reduction reactions, identify the half reactions and label them as oxidation or reduction: a. Cu(s) + Ni²+ (aq) → Ni(s) + Cu²+ (aq) b. 2 Fe³+ (aq) + 3Ba(s) 3 Ba²+ (aq) + 2 Fe(s)​