ELECTROCHEMISTRY

ELECTROCHEMISTRY :

It is the branch of chemistry which deals with the relationship between electrical energy and chemical energy and inter-conversion of one form into another.

An electrochemical cell consists of two metallic electrodes dipped in electrolytic solutions. The cells are of two types:
(a) Electrolytic cells : convert electrical energy to chemical energy. Used in electroplating and electrorefining. 

(b) Galvanic / Daniel / Electrochemical Cell : convert chemical energy to electrical energy.

    

Types of Conductor :

1.) Metallic Conductor :

 ->  electrons are charge carriers.

 ->  no transfer of mass.

 ->  does not depend on concentration .

 ->  faraday's law not applicable.

2.) Electrolytic Conductor :  

 ->  ions are charge carriers.

 ->  mass transfer occur.

 ->  depends on concentration.

 ->  faraday's law is applicable.