Chapter 11, Problem 57E

Interpretation Introduction

(a)

Interpretation:

Among ${\text{H}}_{\text{2}}\text{O}$ and ${\text{H}}_{\text{2}}\text{S}$, the compound having higher heat of fusion is to be stated.

Concept introduction:

The heat of fusion of a compound is the amount of energy required to convert solid into liquid form. The heat of fusion depends upon the intermolecular forces of attraction between the molecules and is also directly proportional to the molar mass of the compound.

Interpretation Introduction

(b)

Interpretation:

Among ${\text{H}}_{\text{2}}\text{S}$ and ${\text{H}}_{\text{2}}\text{Se}$, the compound having higher heat of fusion is to be stated.

Concept introduction:

The heat of fusion of a compound is the amount of energy required to convert solid into liquid form. The heat of fusion depends upon the intermolecular forces of attraction between the molecules and is also directly proportional to the molar mass of the compound.