Question

Write the first law of Faraday of electrolysis.

Hint:

Faraday's laws are used in the calculation of the amount of substance deposited during electrolysis.

Answer 1

Step 1: First law of Faraday.
The first law of Faraday of electrolysis states that: "The amount of substance liberated at an electrode during electrolysis is directly proportional to the quantity of charge passed through the electrolyte." Mathematically, it is expressed as: \[ m = \frac{Q \cdot M}{F \cdot z} \] where: - \( m \) is the mass of the substance liberated at the electrode, - \( Q \) is the total charge passed (in coulombs), - \( M \) is the molar mass of the substance, - \( F \) is Faraday's constant (approximately 96500 C/mol), - \( z \) is the valency of the ion.

Step 2: Conclusion.
This law relates the amount of substance deposited during electrolysis to the charge passed, which is fundamental to understanding electroplating and other electrochemical processes.