Deciding Where Reactions Occur

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

Deciding Where Reactions Occur

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

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

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