Ecell and pH


Moderators: Chem_Mod, Chem_Admin

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

Ecell and pH

Postby Jose Torres » Sun Mar 03, 2019 10:51 pm

An equation in the book to determine the pH of a solution is . What is ? 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

Postby Noah Cook 3O » Sun Mar 03, 2019 10:54 pm

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

Postby Xingzheng Sun 2K » Fri Mar 08, 2019 4:23 am

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

Postby Mhun-Jeong Isaac Lee 1B » Sun Mar 10, 2019 6:30 pm

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.


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

Who is online

Users browsing this forum: No registered users and 10 guests