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Ishita Monga 1B
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Joined: Thu Jul 27, 2017 3:00 am


Postby Ishita Monga 1B » Mon Feb 12, 2018 3:30 pm

What is the difference between deltaSo and deltaStot?

Samantha Kan 2L
Posts: 30
Joined: Sat Jul 22, 2017 3:00 am

Re: entropy

Postby Samantha Kan 2L » Mon Feb 12, 2018 3:34 pm

In the book, it usually has delta S as the entropy of the system, while it specifies the entropy of the surroundings and total entropy with delta Ssurr and delta Stot respectively. Delta Stot would therefore be delta S + delta Ssurr.

Riya Pathare 2E
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Joined: Sat Jul 22, 2017 3:01 am
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Re: entropy

Postby Riya Pathare 2E » Mon Feb 12, 2018 6:11 pm

the deltaStot would also be able to tell you whether the reaction would be spontaneous or not while the deltaS would not be able to tell you that. With just delta S you would need to calculate delta G in order to find spontaneity.

Jessica Jones 2B
Posts: 80
Joined: Fri Sep 29, 2017 7:04 am

Re: entropy

Postby Jessica Jones 2B » Mon Feb 12, 2018 6:18 pm

for reversible reactions, does deltaStot(or universe) always equal 0?

Veritas Kim 2L
Posts: 30
Joined: Fri Sep 29, 2017 7:05 am

Re: entropy

Postby Veritas Kim 2L » Mon Feb 12, 2018 8:28 pm

I think that is the definition of a reversible deltaStot. For a it to be considered a reversible reaction, entropy of the system must be exactly the opposite of the surrounding and vice versa.

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