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E cell

Posted: Wed Mar 06, 2019 9:20 am
by Emma Scholes 1L
What is the difference between E cell and E^o ?

Re: E cell

Posted: Wed Mar 06, 2019 10:12 am
by Manya Bali 4E
E^o is the standard reduction potential. It is the reduction potential calculated at a 1 M solution or at 1 atm and at 25 degrees Celsius.

E is the cell potential, and it can change based on concentrations of product/reactant, temperature, and other nonstandard conditions.

The equation that relates these values is the Nernst equation, which is E = E^o - (RT/nF)lnQ

Re: E cell

Posted: Wed Mar 06, 2019 4:49 pm
by Bruce Chen 2H
E^o is the standard reduction potential, which is essentially the cell potential at STP under ideal conditions.

E is the cell potential that changes based on the "nonstandard" conditions.

Re: E cell

Posted: Thu Mar 07, 2019 12:19 am
by Casandra
E^o is the standard reduction potential, which means under standard conditions: 1atm, 1M, and at 25 degrees Celsius
E is the cell potential, which changes.

Re: E cell

Posted: Thu Mar 07, 2019 9:46 am
by Niveda_B_3I
E^o is the standard reduction potential, or basically how badly the molecule wants to be reduced (positive means it wants to be reduced more, negative means it wants to be oxidized more). Ecell basically refers to the total standard reduction potential of the cell with E^o of the cathode - E^o of the anode

Re: E cell

Posted: Thu Mar 07, 2019 11:39 am
by Calvin Patel 2H
E^o cell is used when under standard conditions. E cell is under "nonstandard" conditions.