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Difference between Cp and Cv

Posted: Mon Jan 16, 2017 11:26 pm
by Catherine_Zhang_1H
I'm having trouble understanding why there is only a difference in gases between Cp and Cv and how that would affect how to solve a problem (like would we have to distinguish which one should be used?) if someone could help out. Thanks

Re: Difference between Cp and Cv

Posted: Tue Jan 17, 2017 12:35 am
by AndyL3I
Cp is the specific heat of a substance under constant pressure, whereas Cv is the specific heat of a substance under constant volume. The problem will usually specify whether the system is under constant pressure or constant volume and you would use Cp or Cv accordingly.