DH=Cp dT always?

  • #1
kelvin490
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Main Question or Discussion Point

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=CP dT is also always true even the pressure is not constant.
 

Answers and Replies

  • #2
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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=CP dT is also always true even the pressure is not constant.
For an ideal gas, it is. dH = dU + d(pV) = dU + RdT=(Cv+R)dT

Chet
 

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