Chapter 3, Problem 3.16NP

Interpretation Introduction

Interpretation: The Joule coefficient for an ideal gas and for van der Waals gas needs to be calculated.

Concept Introduction: For ideal gas, the relation between $\text{n}$ number of moles of gas under pressure, $\text{P}$ , volume, $\text{V}$ at temperature, $\text{T}$ is given as:

  $\text{PV = nRT}$ - (1)

Where $\text{R}$ is universal gas constant.

For van der Waals equation, the relation between $\text{n}$ number of moles of gas under pressure, $\text{P}$ , volume, $\text{V}$ at temperature, $\text{T}$ is given as:

  $\text{P = }\frac{\text{nRT}}{\text{V - nb}}-\frac{{\text{n}}^2\text{a}}{{\text{V}}^2}$ - (2)

Where $\text{R}$ is universal gas constant, a and b are van der Waals constant.