Question

paraday law of electrolysis

Answer 1

Explanation:

Faraday’s Laws of Electrolysis:

Faraday’s laws are the two laws given by Michael Faraday in 1834 which describes and defines the quantitative relationship between electricity and ions deposited at electrodes. The two laws of Faraday’s Laws of Electrolysis are:

Faraday’s First Law of Electrolysis:

Faraday’s first law of electrolysis states that:

The mass of ions or substances liberated at an electrode during electrolysis is directly proportional to the quantity of electricity transferred to the electrode.

Here,

If, Mass of Ions liberated = m

Quantity of electricity = The total charge used for electrolysis = Q = I * t

I = The current through the electrodes. & t = the time for which the process of electrolysis is run.

Then According to the Faraday’s first law of electrolysis:

m \propto Q

or, m = Z \times Q Where, Z is the constant.

Or, m = Z \times I \times t

So, When I = 1 and t=1 m=Z

The “Z” is a constant and is known as the ElectroChemical Equivalent (ECE) of the substance.

The ElectroChemical Equivalent of a substance is the mass of the ions liberated by the passage of one ampere of current through electrodes for one second.

The ECE of a substance is a composite function of the valency and atomic weight of the substance. And it’s value is given by:

ECE = \dfrac{1}{F} \times \dfrac{a}{v}

Where, a = Atomic weight of the substance.

v = Valency of the substance

& F = Faraday’s constant , which is the charge required to liberate one gram-equivalent of any substance and is equal to 96485 C mol−1