Chapter 17, Problem 5E

Given the following pairs of balanced half-reactions, determine the balanced reaction for each pair of half-reactions in an acidic solution.

(a) $\text{Ca}\to {\text{Ca}}^{2+}+2{\text{e}}^{-},{\text{F}}_2+2{\text{e}}^{-}\to 2{\text{F}}^{-}$

(b) $\text{Li}\to {\text{Li}}^{+}+{\text{e}}^{-},{\text{Cl}}_2+2{\text{e}}^{-}\to 2{\text{Cl}}^{-}$

(c) $\text{Fe}\to {\text{Fe}}^{3+}+3{\text{e}}^{-},{\text{Br}}_2+2{\text{e}}^{-}\to 2{\text{Br}}^{-}$

(d) $\text{Ag}\to {\text{Ag}}^{+}+{\text{e}}^{-},{\text{MnO}}_4{}^{-}+4{\text{H}}^{+}+3{\text{e}}^{-}\to {\text{MnO}}_2+2{\text{H}}_2\text{O}$