## Delta S total [ENDORSED]

Volume: $\Delta S = nR\ln \frac{V_{2}}{V_{1}}$
Temperature: $\Delta S = nC\ln \frac{T_{2}}{T_{1}}$

Carlos Gonzales 1H
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Joined: Fri Sep 29, 2017 7:05 am
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### Delta S total

During the midterm review, it was stated that $\Delta S_s_y_s=-\Delta S_s_u_r_r$ when Delta S total is 0. Could someone explain how it can be zero and what the significance is?

Anh Nguyen 2A
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### Re: Delta S total

ΔS total=0 when the system is at equilibrium or the process is reversible.

Kayla Tchorz-Dis 1F
Posts: 30
Joined: Thu Jul 13, 2017 3:00 am

### Re: Delta S total  [ENDORSED]

ΔSsys+Δsurroundings =Δtotal, so when ΔS total=0, you just move either ΔS sys or ΔSsurr to the other side, making one negative. It doesn't matter which one