E potential

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Karina Kong 2H
Posts: 98
Joined: Thu Jul 25, 2019 12:16 am

E potential

Postby Karina Kong 2H » Sun Mar 08, 2020 11:47 pm

If given to E potentials, is the higher E potential the cathode?

Brandon Tao 1K
Posts: 100
Joined: Sat Aug 17, 2019 12:15 am

Re: E potential

Postby Brandon Tao 1K » Sun Mar 08, 2020 11:55 pm

Yes if it is a galvanic cell

Rohit Ghosh 4F
Posts: 99
Joined: Thu Jul 25, 2019 12:17 am

Re: E potential

Postby Rohit Ghosh 4F » Wed Mar 11, 2020 11:40 am

Yes, because the E value represents the reduction potential, flipping it represents the oxidation potential. The higher reduction potential will be the cathode, while the flipped oxidation reaction will be the anode.

Andrew F 2L
Posts: 103
Joined: Sat Aug 17, 2019 12:17 am

Re: E potential

Postby Andrew F 2L » Wed Mar 11, 2020 1:09 pm

If you are asked to find the standard potential after figuring out which is the cathode however, do NOT change the sign on the potential value if you are using Ecell= Ecathode- Eanode

Bryce Ramirez 1J
Posts: 120
Joined: Sat Aug 24, 2019 12:16 am

Re: E potential

Postby Bryce Ramirez 1J » Wed Mar 11, 2020 3:16 pm

You can determine which one is the cathode and which one is the anode by subtracting one from the other, and whichever order of numbers gives you a positive E cell, then the number on the left was the cathode and the one on the right is the anode.

Celena Kim 2I
Posts: 106
Joined: Sat Sep 14, 2019 12:17 am

Re: E potential

Postby Celena Kim 2I » Thu Mar 12, 2020 9:16 pm

YEs, the more positive E potential would be the cathode while the more negative E potential would be the anode.

Ryan Yoon 1L
Posts: 55
Joined: Mon Jul 01, 2019 12:15 am

Re: E potential

Postby Ryan Yoon 1L » Thu Mar 12, 2020 9:44 pm

Yes, a higher E value means that its is a very strong oxidizing agent, meaning that it is the cathode as it is reduced.

ramiro_romero
Posts: 90
Joined: Sat Sep 07, 2019 12:16 am

Re: E potential

Postby ramiro_romero » Thu Mar 12, 2020 10:14 pm

Yes, you want your cell potential to be positive. Therefore, the largest value will be the cathode. Keep in mind the formula, Ecell = E cathode - E anode.

205154661_Dis2J
Posts: 109
Joined: Wed Sep 18, 2019 12:21 am

Re: E potential

Postby 205154661_Dis2J » Sat Mar 14, 2020 3:59 pm

Yes, the cathode is always (I think) the highest Epotential and the lowest one is the anode.


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