Chapter 16, Problem 66E

Use the half-reaction method to balance each redox reaction occurring in acidic aqueous solution.

a. ${\text{I}}^{-}(aq)+{\text{NO}}_2^{-}(aq)\to {\text{I}}_{\text{2}}(s)+\text{NO}(g)$

b. ${\text{BrO}}_{{}_3}^{-}(aq)+{\text{N}}_2{\text{H}}_4(g)\to {\text{Br}}^{-}(aq)+{\text{N}}_2(g)$

c. ${\text{NO}}_{{}_3}^{-}(aq)+{\text{Sn}}^{2+}(aq)\to {\text{Sn}}^{4+}(aq)+\text{NO}(g)$