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:
\[
m = ZIt
\]