C in nCv ln (T2/T1)

isochoric/isometric:
isothermal:
isobaric:

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Jason Wu 1E
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C in nCv ln (T2/T1)

Postby Jason Wu 1E » Tue Feb 11, 2020 3:17 pm

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
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Re: C in nCv ln (T2/T1)

Postby KaleenaJezycki_1I » Tue Feb 11, 2020 3:19 pm

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

nicole-2B
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Re: C in nCv ln (T2/T1)

Postby nicole-2B » Tue Feb 11, 2020 3:34 pm

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

Leslie Almaraz 4G
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Re: C in nCv ln (T2/T1)

Postby Leslie Almaraz 4G » Thu Feb 13, 2020 7:36 pm

this is the heat capacity of the system at constant volume

Leslie Almaraz 4G
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Re: C in nCv ln (T2/T1)

Postby Leslie Almaraz 4G » Thu Feb 13, 2020 7:36 pm

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

Sanjana Munagala_1j
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Re: C in nCv ln (T2/T1)

Postby Sanjana Munagala_1j » Fri Feb 14, 2020 10:13 am

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
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Re: C in nCv ln (T2/T1)

Postby Eva Zhao 4I » Wed Feb 19, 2020 7:11 pm

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

Adriana_4F
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Re: C in nCv ln (T2/T1)

Postby Adriana_4F » Wed Feb 19, 2020 7:17 pm

Eva Zhao 4I wrote:To add on, the relationship between Cv and Cp is Cp = Cv + 1. The values for Cv are shown below (know that we look at the ideal gas values):
Image


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

Adriana_4F
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Re: C in nCv ln (T2/T1)

Postby Adriana_4F » Wed Feb 19, 2020 7:30 pm

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

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


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