Chapter 11, Problem 113AE

a)

Interpretation Introduction

Interpretation:Whether below statement is true or not should be determined.

At standard conditions, copper metal can be oxidized by ${\text{Ag}}^{+}$ .

Concept introduction:Study of interchange between electrical and chemical energy falls under branch of chemistry called electrochemistry. It includes occurrence of oxidation and reduction reactions. This includes production of electric current from chemical reaction and vice-versa.

Reactions that occur in galvanic cells can be broken down into two half-cell reactions. One half-cell reaction is that of reduction whereas another half-cell reaction is that of oxidation.

b)

Interpretation Introduction

Interpretation: Whether below statement is true or not should be determined.

The oxidizing agent is at the anode in the galvanic cell.

Concept introduction:Electrochemical cells that convert chemical energy to electrical energy are called galvanic cells. These are also known as voltaic cells. In these cells, spontaneous redox reactions take place.

c)

Interpretation Introduction

Interpretation: Whether below statement is true or not should be determined.

If the half reactions in the cell are as follows:

  ${\text{Al}}^{3+}+3e^{-}\to \text{Al}$ and ${\text{Mg}}^{2+}+2e^{-}\to \text{Mg}$

The anode will be aluminum.

Concept introduction: Electrochemical cells that convert chemical energy to electrical energy are called galvanic cells. These are also known as voltaic cells. In these cells, spontaneous redox reactions take place.

d)

Interpretation Introduction

Interpretation: Whether below statement is true or not should be determined.

The movement of the electrons takes place from lower to higher ion concentration in the concentration cell.

Concept introduction:Electrochemical cells that convert chemical energy to electrical energy are called galvanic cells. These are also known as voltaic cells. In these cells, spontaneous redox reactions take place. Concentration cells are special cases of galvanic cells that consist of two half-cells with same electrodes but different concentrations.

e)

Interpretation Introduction

Interpretation: Whether below statement is true or not should be determined.

In the salt bridge of the galvanic cell, negative ions flow in the same direction of the electrons.

Concept introduction:Study of interchange between electrical and chemical energy falls under branch of chemistry called electrochemistry. It includes occurrence of oxidation and reduction reactions. This includes production of electric current from chemical reaction and vice-versa.