## enthalpy of surroundings

$\Delta S = \frac{q_{rev}}{T}$

mendozayael_2H
Posts: 31
Joined: Fri Sep 29, 2017 7:06 am

### enthalpy of surroundings

When does enthalpy S of the surroundings equal to 0? I think there has to be more info given, I'm just not sure. Thinking in terms of Stotal= Ssurroundings + Ssystem.

Ryan Sydney Beyer 2B
Posts: 82
Joined: Fri Sep 29, 2017 7:07 am
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### Re: enthalpy of surroundings

The change in entropy of the surroundings is going to equal zero during an irreversible process. During an irreversible process, the change in entropy of the system is equal to the change in entropy total and the change in entropy of the surroundings is equal to zero. However, during a reversible process, the change in entropy total is zero while the change in entropy of the system is equal in magnitude to the change in entropy of the surroundings. I say change in magnitude because the change in entropy of the system and surroundings will have opposite signs in this situation.