Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Ideal Gas vs. Van Der Walls

  1. Nov 5, 2004 #1
    Why does the Van Der Walls equation give a less value for pressure than the Ideal Gas equation does?
  2. jcsd
  3. Nov 5, 2004 #2
  4. Nov 6, 2004 #3


    User Avatar
    Science Advisor
    Gold Member

    The main point is a VDW model gas has electrostatic interactions between particles. Thus, the particles are not flowing as free as in an ideal model gas. Therefore the pressure is smaller than the pressure predicted by VDW.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook