## Reversible expansion

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

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### Reversible expansion

Can someone please explain when an isothermal expansion would occur?

Laura Gong 3H
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### Re: Reversible expansion

Isothermal expansion occurs when the temperature stays constant. It usually refers to reversible expansion where you would use the equation w=-nRT*ln(Vf/Vi).