MODULE- 5: Electrode System
,Electrochemistry:
It is the branch of chemistry, which deals with the study of in
conversion of electrical energy into chemical energy that takes pl
through electrochemical redox reactions.
Electrochemical cell:
The device which converts chemical energy into electrical ene
and electrical energy into chemical energy are called electrochem
cells.
Types of Electrochemical cell:
➢Galvanic cell
➢Electrolytic cell
➢Concentration cell
➢Fuel cell
, Galvanic Cell:
➢A cell which converts chemical energy into electrical energy
➢Cell reaction is spontaneous
➢ΔG is –ve, Ecell is +ve
➢Requires salt bridge to separate two half cells
➢Anode: -ve electrode at which oxidation takes place
➢Cathode: +ve electrode at which reduction takes place
➢Example: Daniell Cell
,Electrochemistry:
It is the branch of chemistry, which deals with the study of in
conversion of electrical energy into chemical energy that takes pl
through electrochemical redox reactions.
Electrochemical cell:
The device which converts chemical energy into electrical ene
and electrical energy into chemical energy are called electrochem
cells.
Types of Electrochemical cell:
➢Galvanic cell
➢Electrolytic cell
➢Concentration cell
➢Fuel cell
, Galvanic Cell:
➢A cell which converts chemical energy into electrical energy
➢Cell reaction is spontaneous
➢ΔG is –ve, Ecell is +ve
➢Requires salt bridge to separate two half cells
➢Anode: -ve electrode at which oxidation takes place
➢Cathode: +ve electrode at which reduction takes place
➢Example: Daniell Cell
