Ecell

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Celeste 1I
Posts: 44
Joined: Fri Sep 28, 2018 12:18 am

Ecell

Postby Celeste 1I » Sun Mar 03, 2019 10:54 pm

how do you know which half reaction to flip when the electrons are on the same side for both half reactions?

Albert_Luu3K
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am

Re: Ecell

Postby Albert_Luu3K » Sun Mar 03, 2019 11:44 pm

Usually, one would have to flip the anode reaction! That is because the anode side is always an oxidation reaction where electrons are always on the products side being given off. The cathode/reduction reaction should have electrons on the reactants side. Then, you will have electrons on either side, cancelling each other out.

Chris Dis3L
Posts: 45
Joined: Fri Sep 28, 2018 12:25 am

Re: Ecell

Postby Chris Dis3L » Sun Mar 03, 2019 11:50 pm

Compare the standard reduction potentials for the half reactions. Flip the reaction that will give you the greatest positive cell potential.

ran2000
Posts: 66
Joined: Fri Sep 28, 2018 12:15 am

Re: Ecell

Postby ran2000 » Sun Mar 03, 2019 11:59 pm

You always flip the anode reaction. You can usually determine the anode reaction by choosing the reaction which has the lowest reduction potential (more negative and less positive)

Diana Sandoval 1K
Posts: 61
Joined: Fri Sep 28, 2018 12:25 am
Been upvoted: 1 time

Re: Ecell

Postby Diana Sandoval 1K » Mon Mar 04, 2019 12:37 am

ran2000 wrote:You always flip the anode reaction. You can usually determine the anode reaction by choosing the reaction which has the lowest reduction potential (more negative and less positive)



How do you exactly figure out the lowest reduction potential?


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