Brief Notes About the Kinetic Molecular Theory and PV=nRT (Ideal Gas Law)

• Kinetic theory of gases- temperature, volume, pressure, moles
• Units of pressure
  • Atmospheres
  • Torr/mm Mg (Millimeters of mercury)

• How temperature and pressure relate to each other
  • A balloon is placed in a refrigerator- temperature decreases, volume decreases (T=kV) (direct proportion) (k=constant)
  • Air is forced into an elastic balloon- volume increases, # of moles increases (n=kV) (direct proportion) (k=constant)
  • An airtight syringe is depressed- pressure increases, volume decreases (v=k(1/p)) (indirect proportion) (k=constant)
  • A sealed tank is heated in a fire- temperature increases, pressure increases (T=kP) (direct proportion) (k=constant)

• To find a change or solve for a variable, isolate the missing variable from the equation.
  • PV=nRT (gas constant=0.0826 L atm/mol K)
  • P=nRT/V

Related posts:

1. Notes About Pressure, the Ideal Gas Law, and Gas Stoichiometry
2. Temperature and the Kinetic Molecular Theory
3. An Introduction to the Ideal Gas Law
4. Kinetic Molecular Theory and Solids
5. Very Brief Notes on Solutions