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gorica
 2 years ago
Do you know where can I find how to get relations between heat capacities Cp and Cv for ideal and real gases?
Or someone can write it here?
gorica
 2 years ago
Do you know where can I find how to get relations between heat capacities Cp and Cv for ideal and real gases? Or someone can write it here?

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LvLWhitey
 2 years ago
Best ResponseYou've already chosen the best response.0You can always start with Cv=3/2R for a monatomic particle and use Cp=Cv+R. Cv= 5/2R for Diatomic CV= 3R for Polyatomic R is a constant that you know right? Cheers :D

gorica
 2 years ago
Best ResponseYou've already chosen the best response.1I have to show why is it Cp=Cv+nR for ideal gas and why it is what it is for real gas. I found this, and I am ok with ideal gas... but I am not really clear with real gas :/

LvLWhitey
 2 years ago
Best ResponseYou've already chosen the best response.0OooOOooo, That complicates things then :( I'm not sure I can help you further, sorry Cheers :D

ghazi
 2 years ago
Best ResponseYou've already chosen the best response.3hope this will help you out , hold a sec

ghazi
 2 years ago
Best ResponseYou've already chosen the best response.3if you are not able to read it , let me know :)

gorica
 2 years ago
Best ResponseYou've already chosen the best response.1I think I found what I was looking for... via coefficient of volume expansion Thank you very much

ghazi
 2 years ago
Best ResponseYou've already chosen the best response.3\[h= u+PV\]\[dh=du+d(PV)\] \[dh=du+d(RT), dh=du+RdT\]\[\frac{ dh }{ dT }=\frac{ du }{ dT }+R\]\[C _{p}=C _{v}+R, C _{p}C _{v}=R\] you can use this derivation too

ghazi
 2 years ago
Best ResponseYou've already chosen the best response.3h enthalpy u  internal energy dh/dT  Cp du/dT Cv

gorica
 2 years ago
Best ResponseYou've already chosen the best response.1is Cp defines as dh/dT or we get it somehow because p=const?

ghazi
 2 years ago
Best ResponseYou've already chosen the best response.3yep, Cp is specific heat capacity at constant pressure, and change in enthalpy at with temperature is the same quantity , for ideal gas dh=CpdT and gamma = Cp/Cv

gorica
 2 years ago
Best ResponseYou've already chosen the best response.1ok. I will read this all again and if I have more questions, I will write them tomorrow, ok? :) thank you again :)

gorica
 2 years ago
Best ResponseYou've already chosen the best response.1do you maybe have graphs of isotherms of Van der Waals gas and real isotherms and something about thermometer with thermocouple, I can't find it on internet?

ghazi
 2 years ago
Best ResponseYou've already chosen the best response.3http://bcs.whfreeman.com/chemicalprinciples3e/content/lgraphs/E3004.html
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