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 one year 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?
 one year 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
 one year 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
 one year 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
 one year 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
 one year ago
Best ResponseYou've already chosen the best response.3hope this will help you out , hold a sec

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

gorica
 one year 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
 one year 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
 one year ago
Best ResponseYou've already chosen the best response.3h enthalpy u  internal energy dh/dT  Cp du/dT Cv

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

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