delta s surrounding and system

Moderators: Chem_Mod, Chem_Admin

Belle Calforda3f
Posts: 67
Joined: Fri Sep 29, 2017 7:07 am

delta s surrounding and system

Postby Belle Calforda3f » Wed Mar 14, 2018 9:26 pm

why is delta s surround negative and system positive?

DianaTrujillo2K
Posts: 40
Joined: Fri Sep 29, 2017 7:04 am

Re: delta s surrounding and system

Postby DianaTrujillo2K » Wed Mar 14, 2018 9:42 pm

The equation for entropy is q rev/ T. The heat lost by the system will be gained by the surroundings and vice versa. So on the equations for entropy will have -q. Furthermore, when the system loses entropy, the surroundings gain it. Hope this helps!

Adrian Lim 1G
Posts: 88
Joined: Fri Sep 29, 2017 7:03 am

Re: delta s surrounding and system

Postby Adrian Lim 1G » Thu Mar 15, 2018 1:09 am

I think usually the signs for delta s in the surroundings and system depend on the reaction itself. I believe the surroundings and the system would essentially be the opposites of each other. As stated above, delta s is basically q/T, so we could determine signs from heat either absorbed or released.

Pooja Nair 1C
Posts: 55
Joined: Thu Jul 13, 2017 3:00 am

Re: delta s surrounding and system

Postby Pooja Nair 1C » Thu Mar 15, 2018 11:54 pm

The signs of the system and surrounding are opposite to one another usually when one loses and the other gains heat. For example, if the surroundings are losing heat, the system will gain heat, making delta Ssurr negative and delta Ssys positive.


Return to “Thermodynamic Systems (Open, Closed, Isolated)”

Who is online

Users browsing this forum: No registered users and 1 guest