## Ranking species

$\Delta G^{\circ} = -nFE_{cell}^{\circ}$

Cynthia Ulloa
Posts: 52
Joined: Fri Feb 23, 2018 3:02 am

### Ranking species

On test 2, there were a few questions that asked us to rank the given species in order of increasing oxidation power going from second oxidation state to neutral. Can someone explain how I would go about this?

klarratt2
Posts: 60
Joined: Fri Sep 28, 2018 12:16 am

### Re: Ranking species

A higher (or more positive) E value means that the species will have a greater oxidation power. A lower (or more negative) E value means the species will have a greater reducing power. Just look at the tables and find the E values for the reduction reaction and rank them that way.

Mukil_Pari_2I
Posts: 87
Joined: Fri Sep 28, 2018 12:29 am

### Re: Ranking species

It is also important to note that you have to identify when you have to flip the Ecell standard based off the question. Even though the reaction is given one way, the problem may be asking for the reverse of the reaction (like the oxidation when only the reduction is given). In those cases, you will have to identify and flip or not flip the Ecell. Otherwise, the answer may likely be incorrect.

Rhea Churi 4K
Posts: 62
Joined: Fri Sep 28, 2018 12:28 am

### Re: Ranking species

More positive E value means it will have a higher oxidizing power.
More negative E value means it will have a higher reducing power.