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When is delta S = 0?

Posted: Tue Feb 12, 2019 6:56 pm
by Max Hayama 4K
When is it safe to assume that delta S is equal to 0? Under what conditions and how does this impact S of surroundings and system?

Re: When is delta S = 0?

Posted: Tue Feb 12, 2019 7:05 pm
by Christina Chang 1C
In a review session, one of the TA's said that if the process is reversible then delta S(universe) would be 0, which means that delta S(surroundings)= -delta S(system). Hope that helped!

Re: When is delta S = 0?

Posted: Tue Feb 12, 2019 8:04 pm
by Alexa Tabakian 1A
delta S equals zero when the reaction is reversible because entropy is a state function. When the process is reversible, it starts and ends in the same place making entropy equal to zero.

Re: When is delta S = 0?

Posted: Tue Feb 12, 2019 8:23 pm
by Sarah Fatkin 4I
Delta S equals zero when there is no heat entering the system, because delta S = q(reversible)/T. Hope this helps!