Cathode question

[Perseverance7779311]

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Hey guys, could someone please explain why the reduction of the cation in the cathode is most favorable when it starts with a high oxidation state? Thank you

 

[Czarcasm]

Hey guys, could someone please explain why the reduction of the cation in the cathode is most favorable when it starts with a high oxidation state? Thank you

The cathode is the site of reduction, meaning some highly oxidized species is gaining electrons. The more oxidized species (that is, the greater, more spontaneous, or more positive it's oxidation potential), the more electrons it would be willing to accept. Redox reactions occur until equilibrium is achieved, so essentially, the further displaced you are from equilibrium (where the potential reaches zero), the more favorable or spontaneous the reaction is.

 

[Perseverance7779311]

@Czarcasm , thank you very much...that really helps!