FARADAY'S LAW OF ELECTROLYSIS

FARADAY'S FIRST LAW :-

In electrolysis for same element amount of substance deposited at cathode or dissolved at anode is directly proportional to amount of electricity passed through the solution.

                                                     w ∝ q

                                                    w= zq

Here z is electrochemical equivalent of element.

                                                   w= zq = zit 

1 Faraday :

It is charge on one mole of electron.

It is that amount of charge which causes deposition or libration of 1gm equivalent weight of a substance.

                                    1 Faraday = 96500 C 

Relation between Z and E :-

                                               W= ZQ

                                    If W= E , Q = 1F = 96500 C

                                              Z = E / 96500

FARADAY'S SECOND LAW :-

For different electrolyte if same electricity is passed then weight of substance deposited or dissolved is directly proportional to their equivalent weight.

                                             w ∝ E

                                         W1 / W2 = E1 / E2