## reversible and irreversible

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

Clement Ng
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Joined: Sat Jul 22, 2017 3:00 am
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### reversible and irreversible

Conceptually what's the difference between reversible and irreversible processes?

SitharaMenon2B
Posts: 50
Joined: Thu Jul 27, 2017 3:01 am

### Re: reversible and irreversible

A reversible process means that it can be reversed by a very small change, while an irreversible process cannot be. For reversible expansion, it occurs when the internal and external pressure are equal (the system is at equilibrium)

Alex Nechaev 1I
Posts: 50
Joined: Fri Sep 29, 2017 7:04 am

### Re: reversible and irreversible

The equations used to calculate work also vary depending on whether the process is reversible or irreversible. Reversible processes are isothermal, with the equation w=-nRT(ln(vf/vd)). Work for irreversible processes can be calculated using w=-Pext+Δv.