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Homework Help: Thermodynamics and entrpoy

  1. May 17, 2003 #1


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    A container of ideal gas at STP undergoes an isothermal expansion and its entrop changes by 3.7JdegreeK. How much work does it do?

    i have [del]S = [del]S_s + [del]S_env >= 0.

    I am confused 1 mol of iseal gas at STP has vol = 22.4L but i usaully given themass also to find Q unless its 37. / 22.4 which gives me 1.0 x 10^3 J.
    is this correct?
    Dx :wink:
  2. jcsd
  3. May 17, 2003 #2
    remember isothermal so [del]U = 0

    dS = dQ/T

    enough there to get the answer.
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