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Homework Help: Working out the cp cv difference for van der waals equation

  1. Feb 5, 2012 #1
    1. The problem statement, all variables and given/known data
    I've put all the information on the picture as i already created on there in an attempt to help brain storm some ideas that didn't work ...

    http://dl.dropbox.com/u/48169762/Capture.PNG [Broken]
    2. Relevant equations

    All on picture :)
    http://dl.dropbox.com/u/48169762/Capture.PNG [Broken]

    3. The attempt at a solution

    Working out [itex]\frac{\partial V}{\partial T}[/itex] via its inverse first - but it didn't work (extremly messy given pressure substitutions etc.) - as explainedd on the picture.

    Any guidence is much appreciated!
    Last edited by a moderator: May 5, 2017
  2. jcsd
  3. Feb 5, 2012 #2
    Ok, I've had another look at this problem and i'm still struggling, here's my idea:

    [PLAIN]http://dl.dropbox.com/u/48169762/Capture3.PNG [Broken]
    Last edited by a moderator: May 5, 2017
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