Effect of concentration on cell potential

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JeremyPark14B
Posts: 29
Joined: Fri Sep 28, 2018 12:19 am

Effect of concentration on cell potential

Postby JeremyPark14B » Thu Mar 14, 2019 12:33 am

How do changes in concentrations of reactants and products affect the cell potential?

Saman Andalib 1H
Posts: 73
Joined: Fri Sep 28, 2018 12:16 am

Re: Effect of concentration on cell potential

Postby Saman Andalib 1H » Thu Mar 14, 2019 12:45 am

Concentration has a profound effect on cell potential. They are related through the Nerst Equation, which states;

E = E deg cell + ((RT)/(nF))lnQ

Where E deg cell is the original cell potential, R = gas constant, T = temp, n = number of moles of electrons transferred in the reaction, F = Faraday's constant, and Q is the new reaction quotient based upon the new concentrations of reactants and products.

davidryan3f
Posts: 63
Joined: Fri Sep 28, 2018 12:23 am

Re: Effect of concentration on cell potential

Postby davidryan3f » Thu Mar 14, 2019 9:06 pm

simply stated, if you increase the concentration of the reactant or decrease the concentration of product the cell potential will increase.


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