Chapter 12, Problem 12.74QP

Interpretation Introduction

Interpretation:

The molar heat vaporization of liquid iodine has to be calculated.

Concept Introduction:

The molar heat of vaporization, fusion and sublimation means the heat energy absorbed or released when 1 mole of a substance changes its phase by vaporization, fusion and sublimation respectively.

Vaporization is the process of transformation of a liquid phase to its gaseous phase.

Fusion is the process of transformation of a solid phase to its liquid phase. So, it is also known as melting process.

Sublimation is the process of transformation of a solid phase to its gaseous phase directly without undergoing into the intermediate liquid phase.

The molar heat of vaporization is represented as ${\text{ΔH}}_{\text{vap}}$.

The molar heat of fusion is represented as ${\text{ΔH}}_{\text{fus}}$

The molar heat of sublimation ${\text{ΔH}}_{\text{sub}}$