Cell potentials and concentration

[Hope Hyland 2D]

How does changing the concentration in a concentration cell affect the cell potential?

[Samuel G Rivera - Discussion 4I]

When you take the equation E = E(standard) - (RT/nF)lnQ and you change the concentration of products or reactants then you change the value of Q which is equal [P]/[R]. Therefore if you change a concentration, whether it be of products or reactants, your will change the cell potential (E).

[Rohit Ghosh 4F]

Yes, and until your solution reaches equilibrium and Q = 1 (which means that ln Q = 0), your E will always be changing until it find equals E(standard).

[Ashley Wang 4G]

If you increase the concentration difference between the solution at the cathode and at the anode, you will increase the cell potential, and vice versa.