Chapter 12, Problem 12.16P

(a)

Interpretation Introduction

Interpretation:

Whether the final pressure of the vapor is different from the initial value or not if some liquid remains is to be determined.

Concept introduction:

When a liquid is vaporized it changes into the gaseous phase and when a gas condenses it converts to the liquid phase. The phase changes can be expressed as follows:

$\text{Liquid}\underset{\text{Condensation}}{\overset{\text{Vaporization}}{\rightleftarrows }}\text{Gas}$

Vapor pressure is the pressure exerted by the vapors when the liquid and vapor phase are in the equilibrium with each other.

(b)

Interpretation Introduction

Interpretation:

Whether the final pressure of the vapor is different from the initial value or not if all the liquid is first removed is to be determined.

Concept introduction:

When a liquid is vaporized it changes into the gaseous phase and when a gas condenses it converts to the liquid phase. The phase changes can be expressed as follows:

$\text{Liquid}\underset{\text{Condensation}}{\overset{\text{Vaporization}}{\rightleftarrows }}\text{Gas}$

Vapor pressure is the pressure exerted by the vapors when the liquid and vapor phase are in the equilibrium with each other.