Relation between Q and Gibbs Free Energy






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Danielle Hoekstra 1C
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Joined: Tue Oct 02, 2018 12:15 am

Relation between Q and Gibbs Free Energy

Postby Danielle Hoekstra 1C » Sat Mar 16, 2019 7:31 pm

If the reaction quotient (Q) is greater than the equilibrium constant what does that indicate for Gibbs free energy?

Artin Allahverdian 2H
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Joined: Fri Sep 28, 2018 12:26 am

Re: Relation between Q and Gibbs Free Energy

Postby Artin Allahverdian 2H » Sat Mar 16, 2019 7:33 pm

Greater than 0 because it will be non spontaneous

Danielle Hoekstra 1C
Posts: 30
Joined: Tue Oct 02, 2018 12:15 am

Re: Relation between Q and Gibbs Free Energy

Postby Danielle Hoekstra 1C » Sat Mar 16, 2019 7:33 pm

Artin Allahverdian 2H wrote:Greater than 0 because it will be non spontaneous


Thanks!

Artin Allahverdian 2H
Posts: 76
Joined: Fri Sep 28, 2018 12:26 am

Re: Relation between Q and Gibbs Free Energy

Postby Artin Allahverdian 2H » Sat Mar 16, 2019 7:35 pm

To clarify if Q>K the reaction would want to shift in the reverse way to make more reactants in order to reach K. Since this will make the reverse rxn more favorable than the forward rxn, the forward rxn will not be spontaneous, and thus, delta G is 0.

Danielle Hoekstra 1C
Posts: 30
Joined: Tue Oct 02, 2018 12:15 am

Re: Relation between Q and Gibbs Free Energy

Postby Danielle Hoekstra 1C » Sat Mar 16, 2019 7:36 pm

Artin Allahverdian 2H wrote:To clarify if Q>K the reaction would want to shift in the reverse way to make more reactants in order to reach K. Since this will make the reverse rxn more favorable than the forward rxn, the forward rxn will not be spontaneous, and thus, delta G is 0.


That’s very helpful! Thanks again


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