## Different Forms of Nernst Equations

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

Michelle_Nguyen_3F
Posts: 40
Joined: Wed Sep 21, 2016 2:59 pm

### Different Forms of Nernst Equations

Hello!
I know that there are basically two forms of the Nernst Equation that we can use:

1) $E_{cell}=E^{\circ}_{cell}-\frac{RT}{nF}lnQ$

and

2) $E_{cell}=E^{\circ}_{cell}-\frac{0.0592}{n}logQ$.

In which situations would we use 1) vs. 2)? Can we use them interchangeably, or we will we get different answers? I ask because I tried using 1) instead of 2) on 2013 Midterm 8B and I got a very different answer than from the solution given. Thank you!

Vera Ong 3H
Posts: 26
Joined: Fri Jun 17, 2016 11:28 am

### Re: Different Forms of Nernst Equations

we can use the equations interchangeably! they may give answers that are a bit off from each other, but both answers are technically correct

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

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