Chapter 19, Problem 19.125SP

Interpretation Introduction

Interpretation:

The total cost of the given galvanization process has to be calculated. 

Concept Introduction:

• 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

• Galvanisation is the electrochemical method of deposition of a layer of zinc on the surface of the metals such as iron to prevent corrosion.