Chapter 2, Problem 2D.7E

(a)

Interpretation Introduction

Interpretation:

Out of the compounds ${\text{AlCl}}_3$ and $\text{KCl}$ the compound with more solubility has to be predicted from electronegativity values.

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. The ionic compounds are highly soluble in water as both are polar and thus by principle of like dissolves like the ionic compounds have appreciable solubility in water.

(b)

Interpretation Introduction

Interpretation:

Of the compounds $\text{MgO}$ and $\text{BaO}$ the compound with more solubility has to be predicted from electronegativity values.

Concept Introduction:

Refer to part (a).