Chapter 9, Problem 9.65SP

Interpretation Introduction

Interpretation:

The amount of energy required to convert 100 mL of water at its boiling point from liquid to vapour have to determine and the relation of the result with the earlier problem given have to justify.

Concept introduction:

In the boiling condition the whole liquid vaporises very fast and the temperature of the liquid remain constant until all the liquid vaporise. Between two liquids the liquid which need low energy to vaporise in the boiling condition is called more volatile than the other.

Given: The heat of vaporisation of water $\Delta {\text{H}}_{vap}(H_{2}O)=(+)40.7\text{kJ/mol}$

To determine:

The energy required for phase transition of water from liquid to vapour and justification of the result with the earlier question.