Defining Cathodes and Anodes through standard cell potential

Moderators: Chem_Mod, Chem_Admin

PeterTran1C
Posts: 30
Joined: Thu Jul 13, 2017 3:00 am

Defining Cathodes and Anodes through standard cell potential

Postby PeterTran1C » Wed Feb 21, 2018 1:03 pm

Just to confirm. When comparing a species couple, to determine which would be the anode and which would be the cathode, the higher/more positive standard potential would represent the cathode while the lower/more negative standard potential would represent the anode.

Cynthia Tsang
Posts: 52
Joined: Fri Sep 29, 2017 7:07 am
Been upvoted: 1 time

Re: Defining Cathodes and Anodes through standard cell potential

Postby Cynthia Tsang » Wed Feb 21, 2018 1:14 pm

Yep!

Daniisaacson2F
Posts: 30
Joined: Sat Jul 22, 2017 3:00 am

Re: Defining Cathodes and Anodes through standard cell potential

Postby Daniisaacson2F » Wed Feb 21, 2018 2:23 pm

Yes you can do it like that, but not all the time. In an electrolytic cell, the potential is supposed to be negative; so, if you did it like you said, then you would mix them up because you are solving for the standard potential to be negative. It is a more safe bet to look at the overall reaction and [censored] whether the ion is being oxidized or reduced and go from there.


Return to “Balancing Redox Reactions”

Who is online

Users browsing this forum: No registered users and 2 guests