C in nCv ln (T2/T1)

[Jason Wu 1E]

What is the C represent? I thought it was a heat capacity but why is it capitalized? is it a constant? or does it depend on the compound at hand? Also when is it applicable for us to use the equation?

[KaleenaJezycki_1I]

C in Cv is heat capacity and will most likely be the heat capacity of a monoatomic gas : Cv= 3/2R

[nicole-2B]

If it is under constant pressure C equals Cp=5/2*R for a monatomic gas

[Leslie Almaraz 4G]

this is the heat capacity of the system at constant volume

[Leslie Almaraz 4G]

there is also a different way to find Cv and Cp for mono and diatomic molecules.

[Sanjana Munagala_1j]

You need to also be cautious when you have a system that has an entropy change due to both a temperature change and a volume change. When you calculate the entropy change for just the temperature change you have to make the assumption that the volume is constant.

Hope that helps!

[Eva Zhao 4I]

To add on, the relationship between C_v and C_p is C_p = C_v + 1. The values for C_v are shown below (know that we look at the ideal gas values):

[Adriana_4F]

To add on, the relationship between C_v and C_p is C_p = C_v + 1. The values for C_v are shown below (know that we look at the ideal gas values):

It's not one it is actually R, the gas constant. Cp=Cv + R

[Adriana_4F]

Cv=3R/2
Cp=5/2R

5/2R=3R/2+R
5R-3R/2 --> 2R/2=R