order of the compounds in a cell diagram

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Christine Inyoung Chung 1F
Posts: 25
Joined: Fri Sep 25, 2015 3:00 am

order of the compounds in a cell diagram

Postby Christine Inyoung Chung 1F » Sat Feb 06, 2016 11:11 pm

When writing the cell diagram, what are some of the rules we have to keep in mind when we write it besides the fact that the electrode itself is always written on the outermost section. For example, do we always place the ions closer to the salt bridge vs. the gases like H2(g)? Is there a certain order we have to write the compounds within the same side of the electrode?

Brooke Tobias 1B
Posts: 13
Joined: Fri Sep 25, 2015 3:00 am

Re: order of the compounds in a cell diagram

Postby Brooke Tobias 1B » Sat Feb 06, 2016 11:15 pm

First off, the electrode is always furthest from the salt bridge. Also, in most cases I am pretty that if there is no electrode included in the reaction, the ions are listed in the order they appear in their reaction. However, even if they are out of order, you can tell where they lie based on which side they are on (for example: if a Fe2+/Fe3+ couple were listed on the anode half of the diagram as Fe3+, Fe2+, you would know that because it is oxidation, the reaction would be Fe2+->Fe3+ + e-).


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