Question

Depict the galvanic cell in which the reaction `Zn(s)+2Ag^(+)(aq)toZn^(2+)(aq)+2Ag(s)` takes place. Further, show (i) which of the electrodes is negatively charged?
(ii) the carriers of the current in the cell. (iii) Individual reaction at each electrode.

Answer 1

The set-up will be similar to that. The cell will be represented as:
`Zn(s)|Zn^(2+)(aq)||Ag^(+)(aq)|Ag(s)`
(i) Anode, i.e.,z inc electrode will be negatively charged.
(ii) The current will flow from silver to copper in the external circuit.
(iii) At anode: `Zn(s)toZn^(2+)(aq)+2e^(-)`
At cathode: `Ag^(+)(aq)+etoAg`