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Diatomic ideal Gas

  1. Mar 31, 2013 #1
    Hi,
    I try to understand a cycle process with an diatomic ideal Gas.

    Question:
    Is it possiblie to use the ideal gas law:

    [itex]pv=NkT[/itex]

    for the diatomic gas?

    I thought it is just for monoatomic.

    Thx
    Abby :redface:
     
  2. jcsd
  3. Mar 31, 2013 #2

    DrClaude

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    Staff: Mentor

    Yes, an ideal gas need not be monatomic.
     
  4. Mar 31, 2013 #3

    Philip Wood

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    Gold Member

    DrClaude is right, of course. Almost all the molecules (O2 and N2) in air are diatomic, and at very low densities air obeys pV = nRT more and more closely.
     
    Last edited: Apr 1, 2013
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