## Reversible vs irreversible

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

Ryan Danis 1J
Posts: 66
Joined: Fri Sep 28, 2018 12:18 am

### Reversible vs irreversible

How do we know if work is reversible or irreversible?

Artin Allahverdian 2H
Posts: 76
Joined: Fri Sep 28, 2018 12:26 am

### Re: Reversible vs irreversible

It is more a question of whether the process itself is reversible. The problem will usually tell u if it is reversible or irreversible. If it is reversible, deltaS of the system will equal the negative of deltaS of surroundings. Work itself is based on if the rxn is isothermal, in which deltaU is 0 and this w+q=0

Claudia Luong 4K
Posts: 59
Joined: Fri Sep 28, 2018 12:25 am

### Re: Reversible vs irreversible

I believe that it will be given in the problem whether the reaction is reversible or irreversible.