Question

Give Faraday’s laws of Electrolysis

Answer 1

Faraday's First Law of Electrolysis. The mass of the substance (m) deposited or liberated at any electrode is directly proportional to the quantity of electricity or charge (Q) passed.

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Answer 2

EXPLANATION.

Faraday's laws of electrolysis.

As we know that,

There are two laws of the Faraday's of electrolysis.

1st Faraday's law of electrolysis.

The mass of a substance deposited or the mass of gas liberated at a particular electrode is directly proportional to the amount of charge passing through solution.

⇒ M ∝ Q.

⇒ M = zQ.

⇒ z = constant.

⇒ z = ECE [Electrochemical equivalent ].

⇒ i = Q/t.

⇒ Q = it.

⇒ M = ZIT.

⇒ Z = E/F.

F = Charge on one mole of electron = 96500 C.

2nd Faraday's law of electrolysis.

If same amount of electric charge is passed through different electrolysis then the amount of substance deposited or liberated is directly proportional to its equivalent weight.

⇒ I = same.

⇒ Q = it.

⇒ M(zn) = ZQ.

⇒ M(zn) = E(zn)/F X Q.

⇒ M(cu) = ZQ.

⇒ M(cu) = E(cu)/F X Q.

⇒ M(zn)/M(cu) = E(zn)/E(cu).

⇒ M ∝ E(q)wt.

⇒ M₁/M₂ = E₁/E₂