Consider a cell given below

                        Cu | Cu2+ || Cl- | Cl2 ,Pt

Write the reactions that occur at anode and cathode.

 

 
Cell reaction represented in the question is composed of two half cell reactions. These reactions are as follows
 
          At anode CuCu2++2e-
          At cathode Cl2+2e-2Cl-
 
Copper is getting oxidised at anode. Cl2, is gotting reduced at cathode.