Concentration of Reactants and Products


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Michelle Dong 1F
Posts: 110
Joined: Fri Sep 29, 2017 7:04 am

Concentration of Reactants and Products

Postby Michelle Dong 1F » Tue Feb 20, 2018 7:52 am

What's the effect of changes in concentration of reactants and products for cell potential?

Tiffany Dao 1A
Posts: 32
Joined: Fri Sep 29, 2017 7:05 am

Re: Concentration of Reactants and Products

Postby Tiffany Dao 1A » Tue Feb 20, 2018 9:33 am

Standard reduction potential (E naught) is an intensive property, so it stays the same as long as it's a balanced equation. However, to find cell potential you must subtract that with (RT/nF)lnQ. This is where the concentrations are important because depending on the ratio of product concentration over reactant concentration, it can make Q either positive or negative. and that would also change the sign of that part of the problem.


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