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Cell Diagram

Posted: Fri Mar 01, 2019 1:50 am
by melissa_dis4K
I know that when we have two aqueous we write the one with the higher oxidation state first, but what if they have the same oxidation state? Example: S2O8^-2 and SO4^2-. Thanks!

Re: Cell Diagram

Posted: Fri Mar 01, 2019 2:05 pm
by Arshiya
I don't think it matters which one you write first, however, make sure to use a comma since they are in the same phase.

Re: Cell Diagram

Posted: Fri Mar 01, 2019 5:05 pm
by Aurbal Popal
I could be wrong, but I think the oxidation number for S in S2O8^(2-) is +7 and the S in SO4^(2-) is +6. I drew it out but I think something is off... so I could be wrong.

Re: Cell Diagram

Posted: Fri Mar 01, 2019 6:24 pm
by Andre_Galenchik_2L
Just to confirm, does order matter when drawing a cell diagram (with regard to on the anode or cathode side, does it matter which species goes first?)

Re: Cell Diagram

Posted: Sat Mar 02, 2019 9:36 am
by Manu Vohra 1L
For cell diagrams it usually doesn't matter which aqueous species comes first, however, you do want to make sure of a few things:
--the electrodes are always on the ends
--cathode is always on the right and and anode always on the left.
--aqueous ions (H+ and OH- included) are always closest to salt bridge