Module 9: Gases

At the completion of this chapter, students should be able to:

• Use the ideal gas law to calculate an unknown pressure, volume or molar quantity, do stoichiometric calculations, and determine the molar mass or  density of an unknown gas
• Use Dalton’s law to calculate the partial pressures of gases in a mixture
• Understand the ideal gas law from the kinetic molecular theory of gases, and how high pressure and low temperature can cause gases to deviate from ideal behavior
• Understand the dependence of molecular speeds of gas molecules on mass, and temperature
• Calculate the root-mean-square speed of a molecule at a given temperature
• Use Graham’s law to compare the rates of effusion or diffusion of two different gases
• Use the Van der Waal’s equation to calculate the pressure and volume of a real gas.