Page 1 of 1

Nernst Equation

Posted: Tue Mar 03, 2020 5:02 pm
by Lizette Noriega 1H
I've seen the different versions of the Nernst equation but when do we know whether to apply one of the other?

Re: Nernst Equation

Posted: Tue Mar 03, 2020 5:04 pm
by Letty Liu 2C
I think it depends on what information you're given, so what you're working with. I believe there is only two versions of the Nernst equation though: one with lnQ and one with logQ.

Re: Nernst Equation

Posted: Tue Mar 03, 2020 5:40 pm
by Lizette Noriega 1H
Letty Liu 2C wrote:I think it depends on what information you're given, so what you're working with. I believe there is only two versions of the Nernst equation though: one with lnQ and one with logQ.


Got it! But when do we use lnQ rather than logQ and vice versa?

Re: Nernst Equation

Posted: Tue Mar 03, 2020 5:57 pm
by Wendy 1E
It doesn't really matter whether you use the ln Q or log Q equation. Some people prefer the log Q equation because on the equations sheet, you are given 0.05916V/n and you do not have to calculate R*T/nF, which you have to calculate with the ln Q equation.