Chapter 19, Problem 15E

Dihromate ion $\left({\text{C}}_{\text{2}}{\text{I}}_{\text{7}}^{\text{2-}}\right)$ in acidic solution is a good oxidizing agent. Which of the following oxidations can be accomplished with dichromate ion in acidic solution? Explain.

a. ${\text{Sn}}^{2+}\left(\text{aq}\right)\text{to}{\text{Sn}}^{44}\left(\text{aq}\right)$

b. ${\text{l}}_{\text{2}}\left(\text{s}\right)\text{to}{\text{lO}}_2^{-}\left(\text{aq}\right)$

c. ${\text{Mn}}^{\text{2+}}\left(\text{aq}\right)$ to ${\text{MnO}}_{\text{4}}^{\text{-}}\left(\text{aq}\right)$