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Homework Help: Entropy thermodynamics

  1. Mar 29, 2016 #1
    1. The problem statement, all variables and given/known data
    A sample consisting of 1 mol of a diatomic perfect gas with Cv,m = 3/2 R is heated from
    100 ºC to 300 ºC at constant pressure. Calculate ∆S for the system.
    2. Relevant equations
    Cv,m = 3/2 R

    3. The attempt at a solution
    Cpm=Cvm +r because we want cp right isobaric
    ∆S= Cp ln T2/T1
    = 5/2 . 8.314 . ln 573/373
    =8.92 jk-1 correct or no
  2. jcsd
  3. Mar 30, 2016 #2


    User Avatar

    Staff: Mentor

    Seems ok.
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