## Nernst Equation

$E_{cell} = E_{cell}^{\circ}-\frac{RT}{nF}\ln Q$

Victoria Luu - 1C
Posts: 60
Joined: Fri Sep 28, 2018 12:15 am

### Nernst Equation

When using the Nernst Equation, how can you find E if you are not given the three other variables and you have to solve for Ecell?

Kathryn Wilhem 1I
Posts: 60
Joined: Fri Sep 28, 2018 12:27 am

### Re: Nernst Equation

In the Nernst equation, there are the constants R and F which should be given. Temperature is usually 298K. You can find n using the standard reduction potentials and K can be found with the concentrations or partial pressures. Ecell can also be found using standard reduction potentials.

almaochoa2D
Posts: 67
Joined: Fri Sep 28, 2018 12:23 am

### Re: Nernst Equation

You are often times given information for E or Ecell.

anthony_trieu2L
Posts: 60
Joined: Fri Sep 28, 2018 12:29 am

### Re: Nernst Equation

Use the information that you have to solve for a certain desired variable. Because many of the values in the Nernst equation are constants, you usually only need to find one or two more values.

GavinAleshire1L
Posts: 29
Joined: Fri Sep 28, 2018 12:21 am

### Re: Nernst Equation

Often times the book won't explicitly say to use the appendix, but that may be used, or like stated above you can usually solve given the majority of the equation being constants.

Return to “Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)”

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