Ecell and pH

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

Jose Torres
Posts: 31
Joined: Fri Sep 28, 2018 12:22 am

Ecell and pH

An equation in the book to determine the pH of a solution is $Ecell=Ecell' + (0.0592) \cdot pH$. What is $Ecell'$ ? Is there a better way to do this?

Noah Cook 3O
Posts: 31
Joined: Fri Sep 28, 2018 12:20 am

Re: Ecell and pH

I believe that is similar to what we did in class with E = E° + RTlnQ, where E° is the standard cell potential (Concentrations of 1M and standard conditions)

Xingzheng Sun 2K
Posts: 62
Joined: Fri Sep 28, 2018 12:29 am

Re: Ecell and pH

I think E'cell is the standard E which is the same as E°. It is a fast way in my opinion because otherwise, you need to calculate pH from lnQ.

Mhun-Jeong Isaac Lee 1B
Posts: 54
Joined: Fri Sep 28, 2018 12:17 am

Re: Ecell and pH

Yes as the above comments have stated, I believe it is best to use the equation involving Q. There were many times Dr. Lavelle advised against using some methods the book suggested.

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