Clicking on the links below will bring up a new window in your browser which shows a graph of the equation concerned. Each page includes a quicktime animation showing the way in which the equation changes as its parameters are changed.

**The Maxwell Boltzmann Equation:**** **

Chapter 4 Equation 4. 31: This page shows the distribution of molecular speeds present in a gas. The animation shows how the function changes with temperature :

**The Ideal Gas Equation:****
**Chapter 4 Equation 4. 28: This page shows the relationship between pressure and volume of an ideal gas. The animation shows how the relationship changes with temperature.

**The Van der Waals Equation of State:****
**Chapter 4 Equation 4. 48:This page shows the relation between pressure and volume of a gas described by the Van der Waals Equation of state. The animation shows how the relationship changes with temperature and highlights the deviations betwwen it and the ideal gas equation.

**The Virial Equation of State:****
**Chapter 4 Equation 4. 50: This page shows the relation between pressure and volume of a gas described by the virial equation of state. This is the equation of state used to describe real gases. The animation shows how the relationship changes with temperature and highlights the deviations betwwen it and the ideal gas equation.