Cp and Cv
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William Baik DISC3B
- Posts: 41
- Joined: Sat Nov 11, 2023 8:26 am
Re: Cp and Cv
Hey!
This has to do with our first law of thermodynamics, which states Internal Energy = Q + W. In constant pressure situations, the heat absorbed for an increase in internal energy has to account for the amount of work the system ends up doing as well, which means it would require more heat to increase the net internal energy (since W should be negative here). Conversely, since Cv means we are in constant volume situations, there is no work being done; therefore, less heat is needed to raise our internal energy of the system, which is usually why Cp > Cv.
Hope this helps!
This has to do with our first law of thermodynamics, which states Internal Energy = Q + W. In constant pressure situations, the heat absorbed for an increase in internal energy has to account for the amount of work the system ends up doing as well, which means it would require more heat to increase the net internal energy (since W should be negative here). Conversely, since Cv means we are in constant volume situations, there is no work being done; therefore, less heat is needed to raise our internal energy of the system, which is usually why Cp > Cv.
Hope this helps!
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Georgia Salcau 1A
- Posts: 42
- Joined: Fri Sep 29, 2023 9:30 am
Re: Cp and Cv
cp is always greater than cv because when heat is added at constant pressure it can expand its volume whereas at constant volume the volume is constant. hope this makes sense!
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