Ecell and pH

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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.

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