2 Al + 3 Cu(NO3)2 --> 2 Al(NO3)3 + 3 Cu

1. Write balanced equations for the oxidation and reduction half-reactions. Identify each half-reaction as oxidation or reduction.

2. In the balanced overall reaction, determine which is the oxidation and reduction agent.

3. Which metal is more effective, aluminum or copper? (which one is the more active one) Show your reasoning.