Split the following redox reaction in to the oxidation and reduction half rections
(a) `2K(s) +CI_(2)(g)rarrKCI(s)`

Explanation

`{:((a)K(s) toK^(+)(g)+e^(-)"["xx2),(Cl_(2)(g)+2e^(-)to2Cl^(-)(g)),(ul(K^(+)(g)+Cl^(-)(g)toKCl(s)"]"xx2)),(2K(s)+Cl_(2)(g)to2KCl(s)),((b) Al(s) to Al^(3+)(aq)+3e^(-)"["xx2),(ul(Cu^(2+)(aq)+2e^(-) to Cu(s)(s)"]"xx3)),(2Al(s)+3Cu^(2+)(aq) to 2Al^(3+)(g)+3Cu(s)):}`