The effect of concentration on cell potential
DG = DGo + RT ln Q
-nF Ecell = -nF Ecell + RT ln Q
When Q < 1 and thus [reactant] > [product], ln Q < 0, so Ecell > Eocell
When Q >1 and thus [reactant] < [product], ln Q > 0, so Ecell < Eocell
When Q = 1 and thus [reactant] = [product], ln Q = 0, so Ecell = Eocell
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