If aqueous solutions of `AgNO_3` is electrolysed using inert electrode the gas evolved at anode is .

Aqueous solution of AgNO_3 is electrolysed using inert electrodes. At the end of electrolysis

Brine is electrolysed by using inert electrodes. The reaction at anode is

Brine is electrolysed by using inert electrodes. The reaction at anode is

When an aqueous solution of CuCl_(2) is electrolysed using Pt inert electrodes, the reaction at cathode and anode respectively are