## Entropy Equation Specific Heat Capacity

Volume: $\Delta S = nR\ln \frac{V_{2}}{V_{1}}$
Temperature: $\Delta S = nC\ln \frac{T_{2}}{T_{1}}$

Shuyi Yu 1B
Posts: 60
Joined: Fri Sep 28, 2018 12:16 am

### Entropy Equation Specific Heat Capacity

How do you know when to use 3/2 R instead of the specific heat capacity provided on the cover sheet?

Beatrice Petelo 1F
Posts: 62
Joined: Fri Sep 28, 2018 12:17 am

### Re: Entropy Equation Specific Heat Capacity

If you are referring to the (3/2)R constant for the ideal gas, Cv, you would use that when volume is constant.

Michael Torres 4I
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Joined: Thu May 10, 2018 3:00 am
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### Re: Entropy Equation Specific Heat Capacity

You will know to use this based on whether you are dealing with ideal gas conditions and based on what kind of information you are given relating to heat capacity.

The information given in terms of constant volume or constant pressure should also help determine what you need.