2. (Kittel 6.5) Integration of the thermodynamic identity for an ideal gas. From the thermodynamic identity at a constant number of particles we have JU dU do = + T pdV T T dt+ Show by integration that for an ideal gas the entropy is o=C₂ log T+ Nlog V + 0₁ T where o, is a constant independent of 7 and V. T dV + pdV T

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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**Integration of the Thermodynamic Identity for an Ideal Gas**

From the thermodynamic identity at a constant number of particles, we have:

\[
d\sigma = \frac{dU}{\tau} + \frac{pdV}{\tau} = \frac{1}{\tau} \left( \frac{\partial U}{\partial \tau} \right)_V d\tau + \frac{1}{\tau} \left( \frac{\partial U}{\partial V} \right)_\tau dV + \frac{pdV}{\tau}
\]

Show by integration that for an ideal gas the entropy is:

\[
\sigma = C_v \log \tau + N \log V + \sigma_1
\]

where \( \sigma_1 \) is a constant independent of \( \tau \) and \( V \).
Transcribed Image Text:**Integration of the Thermodynamic Identity for an Ideal Gas** From the thermodynamic identity at a constant number of particles, we have: \[ d\sigma = \frac{dU}{\tau} + \frac{pdV}{\tau} = \frac{1}{\tau} \left( \frac{\partial U}{\partial \tau} \right)_V d\tau + \frac{1}{\tau} \left( \frac{\partial U}{\partial V} \right)_\tau dV + \frac{pdV}{\tau} \] Show by integration that for an ideal gas the entropy is: \[ \sigma = C_v \log \tau + N \log V + \sigma_1 \] where \( \sigma_1 \) is a constant independent of \( \tau \) and \( V \).
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