### Nernst Equation

Posted:

**Mon Mar 02, 2020 1:05 pm**How do I know when to use log instead of ln in the Nernst Equation?

Created by Dr. Laurence Lavelle

https://lavelle.chem.ucla.edu/forum/

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=142&t=61036

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Posted: **Mon Mar 02, 2020 1:05 pm**

How do I know when to use log instead of ln in the Nernst Equation?

Posted: **Mon Mar 02, 2020 2:43 pm**

You can use either forms of the equation with either log or ln because you will get the same answer either way. It just might be sometimes more convenient to use the log form of the Nernst equation if you're dealing with pH since pH = -logH+. In most of the problems however either equation will work fine.