Select the correct cell reaction of the cell `Ag(s)|Ag^+(aq)"||"cu^(2+)(aq)"|"cu(s)`:

Options

A. `2 Ag (s) + Cu(s) to Cu^(2+) (aq) + 2 Ag^(+) (aq)`
B. `Cu (s) + 2 Ag ^(+) (aq) to Cu^(2+) (aq) + 2 Ag (s)`
C. `2 Ag (s) + Cu^(2+) (aq) to Cu(s) + 2 Ag^(+) (aq)`
D. `Cu^(2+) (aq) + 2 Ag^(+) (aq) to 2 Ag (s) + Cu (s)`

Answer

C

Explanation

Anode : ` 2 Ag (s) hArr 2 Ag^(+) (aq) + 2e^(-)`
Cathode : `Cu^(2+) (aq) +2 e^(-) hArr Cu (s)`
Net reaction : 2 Ag (s) + `Cu^(2+) (aq) hArr 2 Ag^(+) (aq) + Cu (s)`