Using data in Appendix E or the reduction table in your notes, calculate the standard cell potential for the following reactions.
2 Al3+(aq) + 3 Pb(s) 2 Al(s) + 3 Pb2+(aq)
O2(aq) + 4 H+(aq) + 2 Zn(s) 2 H2O(l) + Zn2+(aq)
2 Au(s) + 3 Pb+2(aq) 2 Au+3(aq) + 3 Pb(s)