## Delta S(tot)

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

Jared Smith 1E
Posts: 51
Joined: Fri Sep 29, 2017 7:04 am

### Delta S(tot)

Can someone please explain what the difference between delta S, delta S (surroundings), and delta S (tot) is? Also, how do these relate to each other when calculating them?

Hena Sihota 1L
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Joined: Fri Sep 29, 2017 7:07 am
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### Re: Delta S(tot)

These three terms are related by deltaStotal=deltaSsystem+deltaSsurroundings.

TarynLane2J
Posts: 30
Joined: Sat Jul 22, 2017 3:00 am

### Re: Delta S(tot)

Also, specifically for in a reversible system, deltaS(tot) is equal to 0, so deltaS(sys) = -deltaS(surr)

Varsha Sivaganesh 1A
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Joined: Thu Jul 13, 2017 3:00 am

### Re: Delta S(tot)

Also, when the reaction is irreversible, $\Delta$Ssurroundings = 0.

Aya Shokair- Dis 2H
Posts: 58
Joined: Fri Sep 29, 2017 7:07 am

### Re: Delta S(tot)

Varsha Sivaganesh 1A wrote:Also, when the reaction is irreversible, $\Delta$Ssurroundings = 0.

I don't think that's true.

Varsha Sivaganesh 1A
Posts: 51
Joined: Thu Jul 13, 2017 3:00 am

### Re: Delta S(tot)

Aya Shokair- Dis 2H wrote:
Varsha Sivaganesh 1A wrote:Also, when the reaction is irreversible, $\Delta$Ssurroundings = 0.

I don't think that's true.

Oh, I have that in my notes from a TA-led review session... maybe I misunderstood what he was saying then.