1. Dec 29, 2014 #1

   kelvin490

   

   Gold Member

   For an ideal gas, the internal energy is a function only of temperature, so that dU = CvdT can always be applied. I am not sure whether dH=C_P dT is also always true even the pressure is not constant.

    

   kelvin490, Dec 29, 2014
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3. Dec 29, 2014 #2

   Chestermiller

   

   Insights Author

   Staff: Mentor

   For an ideal gas, it is. dH = dU + d(pV) = dU + RdT=(Cv+R)dT
   
   Chet

    

   Chestermiller, Dec 29, 2014

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