In electrochemistry, we study reactions which produce electricity and other chemical reactions which take place with the help of electricity. The first type of reactions occur spontaneously but second type of reactions are forced to occur and work is done on the system.

Electrolytes conduct electricity in their aqueous solution or in molten state. The electrolytic conductance depends upon concentration of electrolyte, nature of electrolyte, etc.

Electro-chemistry: The branch of chemistry which deals with relationship between chemical energy and electrical energy and how one can be converted into another is known as electrochemistry.