Question

Depict the galvanic cell in which the reaction Zn (s) + 2Ag⁺ -->Zn²⁺ + 2Ag (s)

takes place. Further show : 

(a) Which of the electrode is negatively charged? 

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

(c) Individual reaction at each electrode.

Answer 1

Zn (s)|Zn²⁺ (aq) || Ag⁺ (aq)|Ag (s)

 (a) Zn electrode (anode)

 (b) Ions are carriers of the current in the cell.

 (c) At anode : 

Zn (s) --> Zn²⁺ + 2e^-

At cathode :

 Ag⁺ + e^- --> Ag (s)