Chapter 8, Problem 8.90AP

Interpretation Introduction

Interpretation:

The definition for vapour pressure of a liquid should be given.

Concept introduction:

Vapour pressure of a liquid: Vapour pressure is defined as the pressure exerted by vapours of liquids when the equilibrium is established between liquid and its vapour.

Heat of vaporization: It is defined as the quantity of heat required to vaporize a substance completely once it reaches its boiling point.

Amount of heat required to produce a given temperature change can be given by the equation:

$\text{Heat}\left(\text{cal}\text{or}\text{J}\right)\text{=}\text{Mass}\left(\text{g}\right)\text{×}\text{Temperature}\text{change}\left(\text{°C}\right)\text{×}\text{Specific}\text{heat}\left(\frac{\text{cal}\text{or}\text{J}}{\text{g×}\text{°C}}\right)$