Find the change in entropy that occurs in a free expansion of the above Van der Waals gas for a volume change $V_0$ to $V = 2V_0$. Express your result in terms of $n$, $a$, $b$, $c_v$, $V_0$, and $T_0$. (2point)
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In a free expansion, the gas expands into a vacuum without doing work and without heat exchange. Therefore, the internal energy remains constant, and the process is irreversible. Show more…
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