Chapter 17, Problem 10QRT

(a)

Interpretation Introduction

Interpretation:

The half cell reaction for oxidation of cadmium to ${\text{Cd}}^{\text{2+}}$ ion has to be stated.

Concept Introduction:

Redox reactions are the reactions in which oxidation and reduction occur simultaneously.  Loss of electrons or gain of oxygen is termed as oxidation.  On the other hand, addition of electrons or hydrogen is known as reduction.  Increase in oxidation number signifies oxidation and decrease in oxidation number signifies reduction.

(b)

Interpretation Introduction

Interpretation:

The half cell reaction for reduction of ${\text{Fe}}^{\text{3+}}$ to $\text{Fe}$ has to be stated.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The half cell reaction for reduction of ${\text{Sn}}^{4+}$ to ${\text{Sn}}^{2+}$ has to be stated.

Concept Introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

The half cell reaction for reduction of chlorine to ${\text{Cl}}^{-}$ has to be stated.

Concept Introduction:

Refer to part (a).

(e)

Interpretation Introduction

Interpretation:

The half cell reaction for oxidation of sulfur dioxide to sulfate ion in acidic condition has to be stated.

Concept Introduction:

Refer to part (a).