Chapter 21, Problem 21.41SP

Interpretation Introduction

Interpretation:

The time required for $\text{7}\text{.50 kg}$ of impure copper to get purified when $\text{40A}$ of current passed through electrolysis cell has to be calculated.

Concept introduction:

Faraday’s law of electrolysis:

The mathematical equation of Faraday’s law is given as

$\begin{array}{l}\text{m}\text{=}\left(\frac{\text{Q}}{\text{F}}\right)\left(\frac{\text{M}}{\text{z}}\right)\\ \\ \text{Q}\text{=}\text{I}\text{×}\text{t}\end{array}$

Where,

m is released mass of substance.

Q is electric charge.

F is Faraday’s constant

M is molar mass of substance

z is number of electrons transfers