Chapter 18, Problem 18.88QE

(a)

Interpretation Introduction

Interpretation:

The overall equation for the given half reactions has to be determined.

Concept introduction:

Voltaic cell or Galvanic cell:

A voltaic cell converts chemical energy into electrical energy.

It consists of two half cells. Each half cell consists of a metal and a solution of a salt of metal. Two half cells are connected by salt bridge.

Cell diagram of voltaic or galvanic cell is as follows.

  $\begin{array}{l}\text{ Salt bridge}\\ \downarrow \\ {\text{Cu(s)|Cu}}^{\text{2+}}{\text{(aq) || Ag}}^{\text{+}}\text{(aq)|Ag(s)}\\ \text{\_\_\_\_\_\_\_\_\_\_\_\_ \_\_\_\_\_\_\_\_\_\_\_}\\ \downarrow \downarrow \\ \text{ Half cell Half cell}\end{array}$

b)

Interpretation Introduction

Interpretation:

The standard reduction potential for the overall chemical reaction has to be determined.

Concept Introduction:

Refer to (a)

c)

Interpretation Introduction

Interpretation:

The potential the corrosion reaction in the presence of air and natural water at $1atm$ has to be determined.

Concept Introduction:

Refer to (a)