E naught in a Concentration Cell

[KatarinaReid_3H]

Why is E naught 0 in concentration cell because I thought that even though it is the same solution, the concentrations are still different? I thought in the equation Enaught Cell = RT(lnK)/nF, E naught only goes to 0 if K=1, which doesn't happen if the concentrations are different.

[Kaihan_Danesh_2J]

E naught is zero because E naught of the cathode minus E naught of the anode is zero since both sides of the battery use the same substance to conduct electricity. I'm not sure how to explain it using the formula you gave but that is the way I understand it. Also, E naught is a standard value and in this case the concentrations of the solutions are driving the movement of electrons, so it is not as if the battery does not work with a zero E naught.

[Neel Bonthala 2G]

Hey! well, you can't really use that equation for a concentration cell because you don't know K. You can't use the given concentrations for K, because it's not at equilibrium. The explanation given above is the reason why E nought is 0 for a concentration cell!

[Simran Bains 2C]

I believe that it's because it has the same substance on both sides.