Chapter 2, Problem 2.24E

(a)

Interpretation Introduction

Interpretation:

Out of ${\text{Cl}}_{\text{2}}\text{O}$ and ${\text{Na}}_{\text{2}}\text{O}$ compound expected to have lower vapor pressure at room temperature has to be predicted.

Concept Introduction:

In any polar covalent bond, the difference in electronegativities gives rise to partial positive and negative charges respectively on the cation and anions. Ionic character of a polar covalent bond is determined on the basis of difference in electronegativities. If the difference exceeds 2, compound is regarded as predominantly ionic.

(b)

Interpretation Introduction

Interpretation:

Out of ${\text{InCl}}_3$ and ${\text{SbCl}}_3$ compound expected to have lower vapor pressure at room temperature has to be predicted.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

Out of $\text{LiH}$ and $\text{HCl}$ compound expected to have lower vapor pressure at room temperature has to be predicted.

Concept Introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

Out of ${\text{MgCl}}_2$ and ${\text{PCl}}_3$ compound expected to have lower vapor pressure at room temperature has to be predicted.

Concept Introduction:

Refer to part (a).