E cell


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nshahwan 1L
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Joined: Fri Aug 30, 2019 12:18 am

E cell

Postby nshahwan 1L » Sun Mar 08, 2020 11:55 pm

On page 549 the difference between Ecell and E standard cell is explained but the book gets really wordy and confusing. It says it is important to know so could someone explain to me the difference?

Brandon Tao 1K
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Joined: Sat Aug 17, 2019 12:15 am

Re: E cell

Postby Brandon Tao 1K » Sun Mar 08, 2020 11:56 pm

Ecell is the cell potential for the half reaciton and Estandard cell is the overall cell potential

Jasleen Kahlon
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Joined: Wed Nov 21, 2018 12:19 am

Re: E cell

Postby Jasleen Kahlon » Sun Mar 08, 2020 11:57 pm

I believe that E standard cell is the standard state cell potential, and then Ecell is the cell potential at non standard state conditions.

Ashley Nguyen 2L
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Re: E cell

Postby Ashley Nguyen 2L » Mon Mar 09, 2020 12:16 pm

E standard cell, which is sometimes called Enot, is the standard state cell potential at state conditions, which is 25C, 1 atm. Ecell is the cell potential at non standard state condition. This value can be found by using the Nernst Equation.

Rohit Ghosh 4F
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Joined: Thu Jul 25, 2019 12:17 am

Re: E cell

Postby Rohit Ghosh 4F » Wed Mar 11, 2020 12:30 pm

Yes, the E standard value implies standard state conditions and in a concentration cell, the reaction is at equilibrium.

Hailey Kim 4G
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Joined: Sat Jul 20, 2019 12:16 am

Re: E cell

Postby Hailey Kim 4G » Wed Mar 11, 2020 1:13 pm

E cell is the cell potential at non-standard state conditions. You would use the Nernst Equation to find E cell.
E standard cell is the standard cell potential, which means concentrations are 1 M and pressures are 1 bar.

Alexandra Bartolome 2H
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Re: E cell

Postby Alexandra Bartolome 2H » Thu Mar 12, 2020 9:27 am

E standard cell is the standard cell potential under standard conditions, such as all solutes present at 25 degrees C, 1 mol/L; all gases at 1 bar. Ecell would be cell potential under non-standard conditions.

nshahwan 1L
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Joined: Fri Aug 30, 2019 12:18 am

Re: E cell

Postby nshahwan 1L » Sun Mar 15, 2020 6:44 am

Is there any point in which Enot and Ecell would be the same value?

ValerieChavarin 4F
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Re: E cell

Postby ValerieChavarin 4F » Sun Mar 15, 2020 7:23 am

E° refers to standard conditions, such as 1M, 1atm, 25°C (This is found using the cathode-anode), while E is not under these same conditions and can be found using the Nernst equation. As long as you have one of them known, the Nernst equation can be used to find the other.

vanessas0123
Posts: 100
Joined: Wed Sep 11, 2019 12:17 am

Re: E cell

Postby vanessas0123 » Sun Mar 15, 2020 8:28 pm

Ecell is the cell potential for the half reaction.
E standard cell is the overall cell potential (Ecathode - Eanode)


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