Chapter 9, Problem 149IP

Interpretation Introduction

Interpretation

At $\text{300°C}$ the vapor pressure of condensed Mercury and number of Mercury atoms in Mercury vapor to be calculated.

Concept Introduction

Vapor pressure: In a closed system, at given temperature the pressure evolved by a vapor in thermodynamic equilibrium with its solid or liquid phases (condensed phase).

$\text{ln}\left(\frac{{\text{P}}_{\text{1}}}{{\text{P}}_{\text{2}}}\right)\text{= }\frac{{\text{ΔH}}_{\text{Vap}}}{\text{R}}\left[\frac{\text{1}}{{\text{T}}_{\text{2}}}\text{-}\frac{\text{1}}{{\text{T}}_{\text{1}}}\right]$

Where,

${\text{P}}_{\text{1}}{\text{ and P}}_{\text{2}}\text{ are}\text{pressure;}\text{}{\text{T}}_{\text{1}}{\text{ and T}}_{\text{2}}\text{ are Temperature}\text{.}$

Ideal gas law: This law expressed by following equation is,

$\text{PV = nRT}$

Where,

$\begin{array}{l}\text{P - Pressure}\\ \text{V - volume}\\ \text{n - Number of moles}\\ \text{R - Gasconstant}\\ \text{T -Temperature}\end{array}$