Cell potential and free energy

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Sarah Chin 1J
Posts: 8
Joined: Fri Sep 25, 2015 3:00 am

Cell potential and free energy

Postby Sarah Chin 1J » Sat Jan 30, 2016 11:51 am

I know he explained this in lecture, but I'm still unclear as to how the maximum cell potential is related to the free energy difference between reactants and products in the cell. Can someone explain it to me?

Brooke Tobias 1B
Posts: 13
Joined: Fri Sep 25, 2015 3:00 am

Re: Cell potential and free energy

Postby Brooke Tobias 1B » Sat Jan 30, 2016 12:41 pm

So, I could try to explain it to you, but here are some resources that do a way better job than I could!

http://chemwiki.ucdavis.edu/Analytical_Chemistry/Electrochemistry/Electrochemical_Cells_and_Thermodynamics

http://chemwiki.ucdavis.edu/Analytical_Chemistry/Electrochemistry/Electrochemistry_3%3A_Cell_potentials_and_thermodynamics

And basically what the book says is that because w(max) = ∆G, and w(max)=qE=-nFE, ∆G=-nFE, which relates cell potential to Gibbs Free Energy.


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