irreversible v reversible

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Karina Koo 2H
Posts: 49
Joined: Fri Sep 28, 2018 12:24 am

irreversible v reversible

Postby Karina Koo 2H » Tue Feb 19, 2019 3:10 pm

Why does S total increase with irreversible but not reversible?

Jaira_Murphy_2D
Posts: 31
Joined: Fri Apr 06, 2018 3:00 am

Re: irreversible v reversible

Postby Jaira_Murphy_2D » Tue Feb 19, 2019 3:19 pm

yes, I think S tot for a reversible process is = to 0

josie 1C
Posts: 18
Joined: Fri Sep 28, 2018 12:19 am

Re: irreversible v reversible

Postby josie 1C » Tue Feb 19, 2019 3:37 pm

If it is a reversible process (and it goes back to the original state) the change in entropy is 0. Since it has returned to its original state, there is no overall change in entropy for reversible processes.

ChathuriGunasekera1D
Posts: 78
Joined: Fri Sep 28, 2018 12:17 am

Re: irreversible v reversible

Postby ChathuriGunasekera1D » Tue Feb 19, 2019 6:40 pm

Hi! If it's a reversible process, you know that S has to change to something because the process cannot return to its original state.

005113695
Posts: 59
Joined: Fri Sep 28, 2018 12:15 am

Re: irreversible v reversible

Postby 005113695 » Wed Feb 20, 2019 4:46 pm

Since S is a state function, the path it takes doesn't matter, therefore if it returns to the original state, entropy is 0.


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