Standard Cell Potential of a Couple

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Gwen Peng 1L
Posts: 36
Joined: Sat Jul 22, 2017 3:01 am

Standard Cell Potential of a Couple

Postby Gwen Peng 1L » Sat Mar 17, 2018 9:07 pm

If you're given the 2 half reactions and their standard cell potentials for a couple do you always make the reaction with the more positive standard cell potential the anode because when you flip it it will become negative and when plugged into the equation it still makes the overall standard cell potential positive?

SantanaRodriguezDis1G
Posts: 56
Joined: Sat Jul 22, 2017 3:00 am

Re: Standard Cell Potential of a Couple

Postby SantanaRodriguezDis1G » Sat Mar 17, 2018 9:18 pm

you want E to be as positive as it can because positive standard potential means spontaneity

ZoeHahn1J
Posts: 63
Joined: Sat Jul 22, 2017 3:01 am
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Re: Standard Cell Potential of a Couple

Postby ZoeHahn1J » Sat Mar 17, 2018 9:20 pm

For a galvanic cell, you will have to flip the standard cell potential that will make E cell positive. There may be other reactions, however, where the question will give you the overall reaction and that reaction forces you to have a negative E cell.


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