Faraday’s First Law of Electrolysis
Faraday's first law of electrolysis states that the mass of a substance deposited or liberated at an electrode
during electrolysis is directly proportional to the quantity of electricity (charge) passed through the electrolyte.
Mathematically, it is expressed as:
m=ZQ
where:
- m is the mass of the substance deposited (in grams),
- Z is the electrochemical equivalent of the substance,
- Q is the total charge passed through the electrolyte (in coulombs).
Since charge
Q is related to current
I and time
t by the equation:
Q=It
Faraday's first law can also be written as:
m=ZIt