write down the cell reactions occuring in following cells

1)(Pt)H₂/H⁺//Cu²⁺/Cu 2)Cd/Cd²⁺//Cl^-/AgCl/Ag 3)Pt/ClO₃ ^-,Cl//ClO₂ ^-/Cl₂(Pt)

1) At anode:
H₂ $\stackrel{}{\to }$ 2H⁺ + 2e-
At cathode:
Cu²⁺+ 2e^- $\stackrel{}{\to }$ Cu
Overall cell reaction:
H₂ + Cu²⁺ $\stackrel{}{\to }$ 2H⁺ + Cu
2) At anode:
Cd²⁺ $\stackrel{}{\to }$ Cd + 2e-
At cathode
2Ag⁺ + 2e^- $\stackrel{}{\to }$ 2Ag
​the overall cell reaction :
Cd²⁺ + 2Ag⁺ $\stackrel{}{\to }$ Cd + ​2Ag

3) there is some mistake kindly check
At anode:
2Cl^-  $\stackrel{}{\to }$2Cl₂ + 2 e-
At cathode
ClO₃^- + 2e-​ $\stackrel{}{\to }$ClO₂^- 
Overall cell reaction:
2Cl^- + ClO₃^- $\stackrel{}{\to }$2Cl₂ + ClO₂^- ​