## delta S vs S

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

ZoeHahn1J
Posts: 63
Joined: Sat Jul 22, 2017 3:01 am
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### delta S vs S

If delta S and S are always equal to each other (S=S(0) + delta S = delta S), then why would we refer to klnW as S but qrev/T as delta S? Why not refer to both as S? Is there a difference?

Peter Dis1G
Posts: 97
Joined: Fri Sep 29, 2017 7:04 am

### Re: delta S vs S

The Boltzmann constant is used to calculate simpler entropy, so it is more precise than the Q rev/T. The Q rev/T is to calculate the bulk change(so less precise) and therefore there is a delta sign.