Spontaneity


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Alexia_Vanegas_1G
Posts: 22
Joined: Wed Sep 21, 2016 3:00 pm

Spontaneity

Postby Alexia_Vanegas_1G » Mon Jan 30, 2017 4:13 pm

If a reaction is spontaneous on its own, how is equilibrium related to the spontaneity?

Brandon_Phan_3J
Posts: 21
Joined: Wed Sep 21, 2016 2:56 pm

Re: Spontaneity

Postby Brandon_Phan_3J » Mon Jan 30, 2017 4:25 pm

If you have a system where delta G = 0, the system is at equilibrium. In order for the reaction to be a spontaneous process delta G of the system must be negative/delta S universe is positive.

Julie Barreto 3A
Posts: 21
Joined: Wed Sep 21, 2016 2:56 pm

Re: Spontaneity

Postby Julie Barreto 3A » Mon Jan 30, 2017 5:32 pm

when do you know if work is being done on the system or by the system?

Alyssa Ishimoto 1A
Posts: 10
Joined: Sat Jul 09, 2016 3:00 am

Re: Spontaneity

Postby Alyssa Ishimoto 1A » Mon Jan 30, 2017 7:57 pm

Work is done on the system when the system gains energy. For example, when a gas is compressed by a piston, work is being done on the system. Work is done by the system when the system loses energy. For example, when a gas expands against a piston, work is being done by the system.

Camille_Rousculp_3A
Posts: 17
Joined: Wed Sep 21, 2016 3:00 pm

Re: Spontaneity

Postby Camille_Rousculp_3A » Mon Jan 30, 2017 9:33 pm

w is positive if work is done by the system, and negative if work is done on the system.

w>0 work done by the system
w<0 work done on the system


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