Chapter 19, Problem 19.78SP

Consider the following substances: $Fe(s),Pb{O}_2(s),H^{+}(aq),Al(s),Ag(s),C{r}_2{O}_7{}^{2-}(aq).$
(a) Look at the E° values in Appendix D, and classify each substance as an oxidizing agent or a reducing agent.
(b) Which is the strongest oxidizing agent? Which is the weakest oxidizing agent?
(c) Which is the strongest reducing agent? Which is the weakest reducing agent?
(d) Which substances can be oxidized by $C{u}^{2+}(aq)?$ Which can he reduced by ${\text{H}}_{\text{2}}{\text{O}}_{\text{2}}(aq)$ ?