Tendency of processes






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manasa933
Posts: 72
Joined: Fri Sep 29, 2017 7:04 am

Tendency of processes

Postby manasa933 » Tue Feb 06, 2018 11:09 am

Do reactions/processes tend to go towards a lower gibbs free energy or a higher energy and why?

Nehal Banik
Posts: 64
Joined: Thu Jul 13, 2017 3:00 am

Re: Tendency of processes

Postby Nehal Banik » Tue Feb 06, 2018 11:24 am

When the Gibbs Free Energy of the reaction is less than 0, that means the forward reaction will be favorable, therefore making it spontaneous.

OliviaShearin2E
Posts: 37
Joined: Fri Sep 29, 2017 7:05 am

Re: Tendency of processes

Postby OliviaShearin2E » Tue Feb 06, 2018 2:56 pm

Manasa pointed out that a reaction will be spontaneous at low Gibbs energy, but as a whole reactions will proceed until they are at equilibrium where ΔG=0. Since ΔG = ΔGº + RT lnQ and ΔGº= -RT lnK, ΔG=0 when Q=K. Essentially, the reaction tries to minimize its Gibbs free energy as it proceeds towards equilibrium. A spontaneous process (ΔG<0) means that the forward reaction taking place will bring the reaction closer to equilibrium, and a nonspontaneous process (ΔG>0) means that the reverse reaction taking place will bring the reaction closer to equilibrium.


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