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Homework Help: Thermodynamics help

  1. Feb 3, 2009 #1
    1. A gas initially at p1 = 1 bar and occupying a volume of 0.5 liter is compressed within a piston–cylinder assembly to a final pressure p2 = 4 bar.
    (a) If the relationship between pressure and volume during the compression is pV = constant, determine the volume, in liters, at a pressure of 3 bar.
    (b) Repeat for a linear pressure–volume relationship between the same end states.

    2. some relevant equations are pV=constant, therefore p1*V1 = p2*V2

    3. basically i tried using the above equation to solve for V2, giving me 0.5 liters. I then used this information to do the same thing using p=3 bar as the initial. My answer for a was V=0.167 L and b was 0.125 L.

    I am really stuck on this please help if you can.
  2. jcsd
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