Cell Potential


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Lauryn Jordan 1F
Posts: 76
Joined: Fri Sep 29, 2017 6:07 am

Cell Potential

Postby Lauryn Jordan 1F » Tue Feb 20, 2018 4:51 pm

when do you use each of the equations and what is the difference?
E = E° -RT/nF * ln Q
E = E° -0.05916 V / n * log Q

Riya Pathare 2E
Posts: 74
Joined: Sat Jul 22, 2017 2:01 am
Been upvoted: 1 time

Re: Cell Potential

Postby Riya Pathare 2E » Tue Feb 20, 2018 5:49 pm

You can use either of the equations cause they are the same. The second equation essentially combines the R, T, and F to get 0.05916 and then takes into account the change from ln to log. Generally log is more efficient to use for biochemistry purposes rather than ln but both are valid.

nathansalce 3e
Posts: 52
Joined: Thu Jul 27, 2017 2:01 am

Re: Cell Potential

Postby nathansalce 3e » Wed Feb 21, 2018 6:52 pm

since R T and F are all constants in standard conditions, these three constants can be multiplied and calculated to be 0.05916, just to simplify the process of calculations.

aaron tang 2K
Posts: 49
Joined: Thu Jul 27, 2017 2:01 am

Re: Cell Potential

Postby aaron tang 2K » Thu Feb 22, 2018 2:39 am

Both of these equations are the same. constants R, T, F = to .05916

Abby Ellstrom 1I
Posts: 53
Joined: Fri Sep 29, 2017 6:04 am

Re: Cell Potential

Postby Abby Ellstrom 1I » Mon Feb 26, 2018 9:25 pm

These equations are essentially the same so you can use them interchangeably depending on which information you have.

andrewr2H
Posts: 29
Joined: Fri Sep 29, 2017 6:05 am

Re: Cell Potential

Postby andrewr2H » Mon Feb 26, 2018 9:31 pm

These equations are equivalent to each other, it is just that one is simplified.

Sophia Bozone 2G
Posts: 51
Joined: Fri Sep 29, 2017 6:07 am

Re: Cell Potential

Postby Sophia Bozone 2G » Mon Feb 26, 2018 10:47 pm

These equations can be used in the same situation, however the one with a number already in it has been simplified with the entry of variables already.

Ashley Macabasco 2K
Posts: 30
Joined: Fri Sep 29, 2017 6:05 am

Re: Cell Potential

Postby Ashley Macabasco 2K » Tue Feb 27, 2018 9:05 pm

Because R, T and F are constants at standard conditions, the second equation is the same as the first equation with the constants computed into a single constant.

Warda Sahib 2J
Posts: 29
Joined: Thu Jul 13, 2017 2:00 am

Re: Cell Potential

Postby Warda Sahib 2J » Thu Mar 15, 2018 6:52 pm

They're the same, you can use either

DamianW
Posts: 35
Joined: Fri Sep 29, 2017 6:06 am

Re: Cell Potential

Postby DamianW » Sun Mar 18, 2018 7:26 pm

when you do you switch the signs of given cell potentials?


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