Cv and Cp

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Fiona Jackson 1D
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Joined: Fri Sep 28, 2018 12:22 am

Cv and Cp

Postby Fiona Jackson 1D » Tue Jan 29, 2019 7:57 am

In class we went over how Cp is usually greater than Cv, why is that? Also how does whether the heat capacity is Cv or Cp change calculations?

Venya Vaddi 1L
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Re: Cv and Cp

Postby Venya Vaddi 1L » Tue Jan 29, 2019 9:15 am

For an ideal gas, Cp is greater than Cv because the Cp system expands (since pressure is constant and volume is not) so the Cp system does work.

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Re: Cv and Cp

Postby chaggard » Tue Jan 29, 2019 9:35 am

Cp for any given gas performs work due to its expansion. Cv is in a fixed container so it is not allowed to expand / do work. That is why the value of Cp is higher the Cv

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