Irreversible expansion and entropy  [ENDORSED]

Volume:
Temperature:

Moderators: Chem_Mod, Chem_Admin

Helen Shi 1J
Posts: 78
Joined: Sat Jul 22, 2017 3:00 am

Irreversible expansion and entropy

Postby Helen Shi 1J » Sat Feb 10, 2018 5:11 pm

Why is it that in a free expansion (according to page 346 in the textbook) that delta S of the surroundings is equal to 0 but delta S (system) is not. The book reasons that no work is done in free expansion so q=0, but if that is the case how can delta S (system) or delta S (total) be anything other than zero?

Rachel Formaker 1E
Posts: 86
Joined: Fri Sep 29, 2017 7:04 am
Been upvoted: 2 times

Re: Irreversible expansion and entropy  [ENDORSED]

Postby Rachel Formaker 1E » Sat Feb 10, 2018 6:14 pm

ΔS of the system will increase because in free expansion, the volume of the system will still increase, so the particles can occupy more microstates, representing an increase in entropy.


Return to “Entropy Changes Due to Changes in Volume and Temperature”

Who is online

Users browsing this forum: No registered users and 1 guest