Question

The amount of ions discharged during electrolysis is directly proportional to:

• A. resistance
• B. strength of electrolyte
• C. area of electrodes
• D. chemical equivalent of ion

Answer 1

The correct option is D chemical equivalent of ion

According to Faraday's first law of electrolysis, the amount (W) of an ion discharged i.e., (oxidized or reduced) at either electrode during electrolysis is directly proportional to the quantity of charge passed through the electrolyte.

i.e., Wα Q

W α i t

W = z. i. t

Here Q = total charge (electricity) passed through the solution.

i = current in ampere

t = time for which current flows in seconds

z = electrochemical equivalent of ion

Hence, amount of ion discharged is directly proportional to the chemical equivalent of the ion.