Chapter 18, Problem 18.84QP

Interpretation Introduction

Interpretation:

The time taken for the completion of the given electrolysis has to be calculated.

Concept Introduction:

• Electrolysis is the process in which the electric current is used for the initiation of a non-spontaneous reaction. The process is widely used for the separation of elements from a mixture or ore.  The process of electrolysis is carried out in an electrolytic cell.
• The amount of electrical charge that is passing through a circuit depends upon the amount and time of the flow of current.  The electrical charge is measured in Coulomb.

$\text{Q=}\frac{\text{I}}{\text{t}}$

Where,

$\text{Q}$ is the charge in Coulomb

$\text{I}$ is the current in Ampere

$\text{t}$ is the time in second

• Faradays First law of electrolysis says that the quantity of substance deposited on an electrode is proportional to the charge passed through the solution.

$\text{m = Z}\times \text{Q}$

Where,

$\text{m}$ is the amount of substance liberated

$\text{Q}$ is the quantity of charge passed

$\text{Z}$ is the electrochemical equivalence of the substance