Concentration Cells

[romina_4C]

Are there any specific equations that we can use to apply to problem the have concentration cells? (ie: test question?) What's the best method to go about solving problems with them?

[Rachel Yu 1G]

One equation that is commonly used in concentration cells is the Nernst equation: Ecell = Eºcell - (RT/nF) lnQ. The differing concentrations can be plugged into Q to find Ecell or Eºcell. It is also important to note that in concentration cells the reactants is the cell with the higher concentration and products is the cell with the lower concentration.

[haileyramsey-1c]

In concentration cell problems they typically give you all the information and you plug it into the equation in the previous post. Or, you may have to calculate concentration using the other information, but it is important to remember that in concentration cells Eºcell is always zero.

[Nick Lewis 4F]

As we saw on test 2, one of the main things that is tested on concentration cells is the fact that the standard cell potential is always zero. This is something that is worth being noted because it can be used to calculate the cell potential using the nernst equation. I wouldnt be surprised if it came up on the final, but I dont think it would be the main focus of a question