## Ideal Gas C

CHEM 14B Lover
Posts: 33
Joined: Fri Sep 28, 2018 12:19 am

### Ideal Gas C

For ideal gases, why is Cp 5/2R and Cv 3/2R

Arshiya
Posts: 69
Joined: Fri Sep 28, 2018 12:16 am
Been upvoted: 1 time

### Re: Ideal Gas C

You can find those values according to the equipartition theorem for an ideal gas and use U=3/2nRT to substitute and find the values for Cp and Cv. It's on the constant and equations sheet. Just remember to use those for monoatomic ideal gases.

804994652
Posts: 68
Joined: Fri Sep 28, 2018 12:26 am

### Re: Ideal Gas C

I think it has something to do with the fact that Cp= Cv+R. Since Cv=3/2 R that would mean Cp= 3/2R + R = 5/2R

jlinwashington1B
Posts: 65
Joined: Fri Sep 28, 2018 12:22 am

### Re: Ideal Gas C

CHEM 14B Lover wrote:For ideal gases, why is Cp 5/2R and Cv 3/2R

What does R refer to?

Anusha 1H
Posts: 65
Joined: Fri Sep 28, 2018 12:15 am

### Re: Ideal Gas C

R is the gas constant

Amy Dinh 1A
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am

### Re: Ideal Gas C

R is the gas constant and it is usually in the units of J/K/mol.