Why is E Standard=0 in a concentration cell?

[Ryan Yoon 1L]

Question above

[Sanjana Borle 2K]

In a concentration cell, essentially the reduction half reaction and oxidation half reaction cancel each other out because the same type of solution is used in both compartments of the cell.

[Kayli Choy 2F]

When finding Estandard, you usually take Estandard(cathode) - Estandard(anode), but in a concentration cell, because the two reactions are the reverse of each other, their Estandard values cancel out, so you get Estandard(cathode) - Estandard(anode) = 0 = Estandard.

[Abby Soriano 1J]

E standard = 0 in a concentration cell since you're essentially dealing with the same reaction occurring in both directions. The E standard of the reduction half-reaction is just the negative value of the E standard of the oxidation half-reaction, and so when you add them together, you get that the total voltage is just 0.

[005206171]

At standard conditions, each compartment of the cell will be 1M. Assuming that a concentration cell uses the same solutions, then the potential difference at standard conditions is 0.