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Second law of thermodynamics, entropy

Problem 2.140

Find the entropy increment of one mole of a Van der Waals gas due to the isothermal variation of volume from V1V_{1} to V2.V_{2} . The Van der Waals corrections are assumed to be known.

Reveal Answer
ΔS=Rln⁡[(V2−b)/(V1−b)]\Delta S=R \ln \left[\left(V_{2}-b\right) /\left(V_{1}-b\right)\right]
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