Faraday's First Law of Electrolysis (Chemistry, Class 12):

 

Faraday's First Law of Electrolysis (Chemistry, Class 12):

Statement:
The mass (m) of a substance deposited or liberated at an electrode during electrolysis is directly proportional to the quantity of electricity (Q) passed through the electrolyte.

Mathematically:

m=Z.Q

Where:

  • m = mass of the substance deposited (in grams)
  • Q = total charge passed (in coulombs)
  • Z = electrochemical equivalent (ECE) of the substance (grams per coulomb)

Also,


Q = I.t
  • I = current (in amperes)
  • t = time (in seconds)

So,


m = Z.I.t

In Simple Words:

Faraday's First Law tells us that more electricity means more substance will be deposited at the electrode. For example, if you double the current or time, the amount of substance deposited will also double.

If you want the Second Law of Faraday or its explanation in Hindi, just let me know!

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