## Reversible Reactions question

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

Cecilia Tsai 3C
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Joined: Fri Sep 25, 2015 3:00 am

### Reversible Reactions question

Hi, does a reversible reaction always do more work than an irreversible reaction? If so, why? and if not, then when does an irreversible reaction do more work?

Chem_Mod
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### Re: Reversible Reactions question

A reversible process is more efficient than an irreversible process because there is less heat lost to the environment in a reversible process (and theoretically there is 0 heat lost in a perfectly reversible process). The internal energy is stated by the equation:
UInternal = W+Q
if Q = 0, then the internal energy is converted entirely to work!
UInternal = W