Deciding Where Reactions Occur

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Letty Liu 2C
Posts: 105
Joined: Fri Aug 09, 2019 12:16 am

Deciding Where Reactions Occur

Postby Letty Liu 2C » Mon Mar 02, 2020 4:41 pm

Does the reduction retain always occur at the electrodes with higher concentration? Is this because the reduction reaction is like the "reactants" of the redox reaction?

Angus Wu_4G
Posts: 102
Joined: Fri Aug 02, 2019 12:15 am

Re: Deciding Where Reactions Occur

Postby Angus Wu_4G » Mon Mar 02, 2020 8:42 pm

The reduction reaction does not necessarily occur at the electrode with the higher concentration, but it can. The point is that concentration doesn't really matter, what matters is the E value of each of the half reactions, that will determine which reaction is the reduction half reaction, and oxidation half reaction. If you are drawing a diagram, or a cell diagram, the anode (oxidation half reaction) is always on the left.

Kishan Shah 2G
Posts: 132
Joined: Thu Jul 11, 2019 12:15 am

Re: Deciding Where Reactions Occur

Postby Kishan Shah 2G » Mon Mar 02, 2020 8:58 pm

Reduction occurs at the cathode and oxidation occurs at the anode.

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