Presented by Azra Goher ELECTROCHEMISTRY Presented by Azra Goher

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

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)

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.