## reversible expansion

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

Mallika Singh 1G
Posts: 99
Joined: Sat Aug 24, 2019 12:16 am

### reversible expansion

I know the formula with the integral is for the reversible expansion, but does anyone know what the area under the curve means?

Jiyoon_Hwang_2I
Posts: 101
Joined: Sat Sep 14, 2019 12:17 am

### Re: reversible expansion

The area under the curve usually represent work

Sydney Pell 2E
Posts: 100
Joined: Wed Sep 11, 2019 12:17 am

### Re: reversible expansion

The area under the reversible expansion curve is the work done during the expansion. You can solve for this using the integral formula for reversible expansion, as the definition of an integral is the area underneath the curve.

Hannah Pham
Posts: 104
Joined: Fri Aug 09, 2019 12:17 am

### Re: reversible expansion

It represents work done by expansion

Veronica Lu 2H
Posts: 89
Joined: Wed Sep 18, 2019 12:18 am
Been upvoted: 1 time

### Re: reversible expansion

the area under the curve is the work by expansion