Concentration of Reactants and Products

[Michelle Dong 1F]

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

[Tiffany Dao 1A]

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.