Which of the following is anodic reaction.

Options

A. `SO_(4)^(2-)+H_(2)O rarr H_(2)SO_(4)+1//2O_(2)+2e^(-)`
B. `H^(o+)+e^(-)rarr 1//2OH_(2)`
C. `Ag^(o+)+e^(-) rarr Ag`
D. None of these

Answer

a

Explanation

At anode, oxidation occurs. So oxidatin reaction is only is `(a)`