Galvanic cells

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Maya Gollamudi 1G
Posts: 100
Joined: Thu Jul 25, 2019 12:15 am

Galvanic cells

Postby Maya Gollamudi 1G » Tue Mar 03, 2020 5:27 pm

In a galvanic cell, is oxidation at the anode always on the left and reduction at the cathode always on the right? How do you determine which half reaction is the oxidation reaction and which reaction is the reduction reaction?

205291012
Posts: 50
Joined: Mon Nov 11, 2019 12:17 am

Re: Galvanic cells

Postby 205291012 » Tue Mar 03, 2020 10:52 pm

Oxidation will be at the anode and reduction at the cathode. The sides could be switched but typically we keep anodes on the left and cathodes on the right. When there is a gain of electrons or the oxidation number decreases then it is reduction. When there is a loss of electrons or an increase in oxidation number, it is oxidation.

Max Madrzyk Dis 4G
Posts: 102
Joined: Wed Sep 18, 2019 12:21 am

Re: Galvanic cells

Postby Max Madrzyk Dis 4G » Tue Mar 03, 2020 11:27 pm

Yeah, I think my TA said that the anode should be on the left and the cathode should be on the right. To tell what's being oxidized and reduced I like to write out the skeletal equation and then just work out the half reactions from there.

DesireBrown1J
Posts: 98
Joined: Wed Sep 18, 2019 12:18 am

Re: Galvanic cells

Postby DesireBrown1J » Thu Mar 05, 2020 12:08 am

One easy way that I remember that the oxidation will be at the anode and reduction at the cathode is through Ox-An (for oxidation-anode). That helped me remember it because it reminded me of the Roxanne song since it sounds like the name. Kinda silly but useful.


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