The oxidation and reduction half reactions of the reaction
2Al(s) + 3Cu2+(aq) → 2Al3+(aq) + 3Cu(s) are
Oxidation: Al(s) → Al3+(aq) + 3e- ] x 2 Reduction: Cu2+(aq) + 2e- → Cu(s) ] x 2
Oxidation: Al(s) → Al3+(aq) + 3e- ] x 2 Reduction: 2Cu2+(aq) + 2e- → Cu(s) ] x 3
Oxidation: 2Al(s) → Al3+(aq) + 3e- ] x 2 Reduction: Cu2+ + 2e- → Cu(s) ] x 3
Oxidation: Al(s) → Al3+ + 3e- ] x 2 Reduction: Cu2+ + 2e- → Cu(s) ] x 3
Oxidation: Al(s) → Al3+ + 3e- ] x 2 Reduction: Cu2+ + 2e- → Cu(s) ] x 3
Oxidation: Al(s) → Al3+ + 3e- ] x 2
Reduction: Cu2+ + 2e- → Cu(s) ] x 3