Chapter 9, Problem 117AE

Interpretation Introduction

Interpretation:

The vapor pressure of benzene at $\text{20°C}$ has to be calculated.

Concept Introduction:

Vapor pressure of the liquid is defined as the pressure of its vapor state when it is in equilibrium with the liquid state. If the volume of the substance and temperature are known, vapor pressure can be calculated using Ideal gas equation,

                                                 $\begin{array}{l}\text{PV}\text{=}\text{nRT}\\ \\ \text{Rewriting the equation, }\\ \text{ P}\text{=}\frac{\text{nRT}}{\text{V}}\\ \text{where}\text{P}\text{=}\text{Pressure}\\ \text{n}\text{=}\text{number}\text{of}\text{moles}\\ \text{R}\text{=}\text{Universal}\text{gas}\text{constant}\\ \text{V}\text{=}\text{Volume}\end{array}$