## S=qrev/ T

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

Shirley Liu 2I
Posts: 64
Joined: Fri Sep 28, 2018 12:16 am

### S=qrev/ T

S=qrev/T is one of the various equations for entropy/change in entropy. it’s used when temp is constant but how would we know if the reaction is reversible for qrev? would the question have to specify or are there “key words/phrases” that implies that?

Lauryn Shinno 2H
Posts: 59
Joined: Fri Sep 28, 2018 12:24 am

### Re: S=qrev/ T

I think if it is a constant temperature you can assume that it is a reversible reaction because irreversible reactions have changing temperatures.

Nathaniel 2E
Posts: 27
Joined: Mon Jun 25, 2018 3:00 am

### Re: S=qrev/ T

Yes, for this class, isothermal and reversible mean the same thing- if the problem tells you it is an isothermal reaction, we know it is a reversible process. We also will always be told in a question if it is reversible by either the problem calling to reversible or calling it isothermal.

abbydouglas1K
Posts: 65
Joined: Fri Sep 28, 2018 12:26 am

### Re: S=qrev/ T

Any isothermal reaction can be assumed to also be reversible In this class.