Chapter 12, Problem 37E

Interpretation Introduction

Interpretation:

The vapor pressure curve should be plotted and the approximate pressure that would be required in the compressor of a refrigeration system to convert Feron-12 vapor to liquid at $25.0°C$ should be determined.

Concept introduction:

In a closed container which contains sufficient liquid, vaporization and condensation occur simultaneously. Eventually a condition is reached in which the amount of vapor remains constant. This condition is one of dynamic equilibrium in which there are processes occurring simultaneously at equal rates. There is no net change in liquid or vapor phases with time once equilibrium has been established.

In the dynamic equilibrium, the pressure exerted by a vapor is called the vapor pressure. A graph of vapor pressure as a function of temperature is known as a vapor pressure curve.