## Entropy of a gas

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

Leah Thomas 2E
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Joined: Fri Sep 29, 2017 7:06 am

### Entropy of a gas

Does entropy increase when an ideal gas is compressed isothermally?

Clara Hu 1G
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Joined: Sat Jul 22, 2017 3:00 am
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### Re: Entropy of a gas

Entropy decreases when an ideal gas is compressed because the volume decreases and pressure increases.

Nehal Banik
Posts: 64
Joined: Thu Jul 13, 2017 3:00 am

### Re: Entropy of a gas

Since the volume decreases, there is less space in the container or wherever the gas is contained, therefore the gas has less possible states therefore the degeneracy for the gases decreases and that means that the entropy of the gas decreases.