The reaction `H_(2)(g)+Cu^(2+)(aq)rarr Cu(s)+2H^(+)(aq)` occurs in a galvanic cell. Identify cathode and anode of the cell and write the reaction that occur at the electroes.

Explanation

Anode reaction : `H_(2)(g)rarr 2H^(+)(aq)+2e`
Cathode reaction : `Cu^(2+)(aq)+2e rarr Cu(s)`
Hence the anode : `Pt|H_(2)(g)|H^(+)(aq)`
Hence the anode : `Pt|H_(2)(g)|H^(+)(aq)`
and cathode : `Cu^(2+)(aq)|Cu(s)`