Chapter 19, Problem 19.91QP

(a)

Interpretation Introduction

Interpretation:

The half-cell reactions and overall reactions for the given electrolysis has to be found and the fate of impurities in the anode also has to be explained.  The time required for the completion of electrolysis 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

(b)

Interpretation Introduction

Interpretation:

The half-cell reactions and overall reactions for the given electrolysis has to be found and the fate of impurities in the anode also has to be explained.  The time required for the completion of electrolysis 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

(c)

Interpretation Introduction

Interpretation:

The half-cell reactions and overall reactions for the given electrolysis has to be found and the fate of impurities in the anode also has to be explained.  The time required for the completion of electrolysis 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