Depict the galvanic cell in which the reaction Which of the electrode is negatively charged

Q.3:Depict the galvanic cell in which the reaction Zn(s) + 2Ag⁺(aq) → Zn2+(aq) + 2Ag(s)

takes place. Further show:

(i) Which of the electrode is negatively charged?

(ii) The carriers of the current in the cell.

(iii) Individual reaction at each electrode.

Solution:

The galvanic cell in which the given reaction takes place is depicted as:

(i) Zn electrode act ads anode in galvanic cell so it will be negatively charged.

 (ii) Electrons move anode to cathode in the external circuit, and the direction of flow of current is always opposite to the flow of electron so that current will flow from silver(cathode) to zinc(anode).

(iii)

At anode

Zn(s) ––– > Zn²⁺(aq) + 2e^–

At cathode

Ag⁺ +  e ^–  ––– >  Ag(s)