Gibb's Free Energy at Equilibrium






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Emma Jacquay 2F
Posts: 40
Joined: Wed Nov 08, 2023 8:34 am

Gibb's Free Energy at Equilibrium

Postby Emma Jacquay 2F » Wed Feb 21, 2024 9:22 pm

Could someone explain to me why Gibb's free energy is = 0 at equilibrium. I understand that for a reaction it will be the dG of products - dG of reactants but beyond that why would the Gibb's free energy be 0 at equilibrium, like conceptually? Thanks!

harper_2I
Posts: 94
Joined: Fri Sep 29, 2023 11:15 am

Re: Gibb's Free Energy at Equilibrium

Postby harper_2I » Wed Feb 21, 2024 9:24 pm

hi! it's because at equilibirium, it's where you want to be. So it won't have the spontaneous drive to go anywhere. It will want to stay at equilibrium.
Last edited by harper_2I on Wed Feb 21, 2024 9:26 pm, edited 1 time in total.

Erika Patel 3I
Posts: 106
Joined: Fri Sep 29, 2023 11:03 am

Re: Gibb's Free Energy at Equilibrium

Postby Erika Patel 3I » Wed Feb 21, 2024 9:25 pm

At equilibrium, the system has reached a rate where the forward and reverse reactions are occurring at equal rates. A system also tends towards minimizing free energy available to do work, and when it is at equilibrium, this energy is at a minimum (which is zero).

Emily Discussion 3F
Posts: 86
Joined: Fri Sep 29, 2023 12:12 pm

Re: Gibb's Free Energy at Equilibrium

Postby Emily Discussion 3F » Wed Feb 21, 2024 9:25 pm

at equilibrium the reaction is not proceeding spontaneously in any direction and is thermodynamically balanced

Kiarash Khademi
Posts: 69
Joined: Fri Sep 29, 2023 11:53 am

Re: Gibb's Free Energy at Equilibrium

Postby Kiarash Khademi » Wed Feb 21, 2024 9:26 pm

Gibbs free energy is 0 at equilibrium because there is no net change in molar enthalpy within the system. Similar to concentration at equilibrium, the backward and forward reactions are occurring at the same rate.


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