Question

The mass of the substance deposited at the cathode is
(A) Inversely proportional to quantity of electricity passed through electrolyte.
(B) Directly proportional to quantity of electricity passed through electrolyte.
(C) Directly proportional to the time for which electricity is passed through the electrolyte.
(D) Inversely proportional to the time for which electricity is passed through the electrolyte.

• A. $A$ and $B$ are true
• B. $B$ and $D$ are true
• C. $B$ and $C$ are true
• D. $A$ and $D$ are true

Answer 1

Answer: (C)

$B$ and $C$ are true

From Faraday's first law electrolysis,

$w=ZIt$

According to Faraday's First law of electrolysis, the mass of a substance deposited at the cathode is directly proportional to the quantity of electricity passed and the time for which it is passed through the electrolyte.

So, statements $B$ and $C$ are true.