## Expansion Work

$w=-P\Delta V$
and
$w=-\int_{V_{1}}^{V_{2}}PdV=-nRTln\frac{V_{2}}{V_{1}}$

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### Expansion Work

Expansion work is work due to the change of volume in a system. Does this include when the volume decreases or only when the volume increases?

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### Re: Expansion Work

Expansion work is when the volume increases of the system. Compression work is when the volume of the system decreases, but the calculations and concepts are still the same.