Anodes vs. Cathodes

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Jessica Nunez 1I
Posts: 58
Joined: Thu Jul 13, 2017 3:00 am

Anodes vs. Cathodes

Postby Jessica Nunez 1I » Sun Feb 18, 2018 8:24 pm

When referring to the voltage of redox potential, how do we know which reaction is the anode and which reaction is the cathode?

Niyanta Joshi 1F
Posts: 30
Joined: Thu Jul 13, 2017 3:00 am

Re: Anodes vs. Cathodes

Postby Niyanta Joshi 1F » Sun Feb 18, 2018 8:29 pm

When the cell is spontaneous, the one with the highest reduction potential should be the reduction half-reaction and so it should act as the cathode. The one with the lower reduction potential as the oxidation-half reaction and so it should act as the anode.

Ryan Neis 2L
Posts: 53
Joined: Fri Sep 29, 2017 7:04 am

Re: Anodes vs. Cathodes

Postby Ryan Neis 2L » Sun Feb 18, 2018 9:09 pm

The reaction that is being reduced usually has the higher, more positive voltage, while the reaction that is being oxidized has the lower, more negative voltage

Yutian Zhao -1J
Posts: 30
Joined: Fri Sep 29, 2017 7:05 am

Re: Anodes vs. Cathodes

Postby Yutian Zhao -1J » Sun Feb 18, 2018 9:12 pm

But how are we supposed to know whether the rxn is spontaneous or not?


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