1. Presented by Azra Goher
ELECTROCHEMISTRY
Presented by Azra Goher

2. ELECTROCHEMICAL CELLS
Defination
It is a cell which converts chemical energy into electrical energy.
Components
Anode: Oxidation reaction
Cathode: Reduction reaction
Salt bridge: KBr solution
Electrolyte: Salt solution
Types
Primary cells: irreverssible
Secondary cells: rechargeable

3. Galvanic cell Galvanic cell consists of two half cells
Each half-cell consists of a metal and a solution of a salt of the metal.
The chemical reaction in the half-cell is an oxidation reduction (redox) reactions.
Cell Diagram
Zn (s) + Cu2+ (aq) Cu (s) + Zn2+ (aq)
[Cu2+] = 1 M & [Zn2+] = 1 M
Zn (s) | Zn2+ (1 M) || Cu2+ (1 M) | Cu (s)

5. Home Task
Search out the electrical appliances being used inn our daily life which involve the use of electrochemical cells.
Also investigate the working of that cells.