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Cell diagram order

Posted: Sat Feb 29, 2020 6:36 pm
by Grace Jansen 2A
If the two ions in the cathode are both in aqueous solution, like Ce4+(aq) and Ce3+(aq), does the order in the cell diagram matter? For example, can it be Pt(s)|I-(aq)|I2(s)||Ce4+(aq),Ce3+(aq)|Pt(s) or Pt(s)|I-(aq)|I2(s)||Ce3+(aq),Ce4+(aq)|Pt(s)?

Re: Cell diagram order

Posted: Sat Feb 29, 2020 6:39 pm
by Tyler Angtuaco 1G
No, the order of those two ions is not important.

Re: Cell diagram order

Posted: Sat Feb 29, 2020 7:08 pm
by Rory Simpson 2F
You might want to put it so that the reactants are first and the products are second for the half reaction, just so that it is clear what is being oxidized and reduced in the reactions.

Re: Cell diagram order

Posted: Sat Feb 29, 2020 8:39 pm
by Lauren Tanaka 1A
I don't think the order of those are particularly important but it is important to remember that the aqueous solution is always closest to the salt bridge and solids are always on the outside.

Re: Cell diagram order

Posted: Sat Feb 29, 2020 9:12 pm
by Daria MacAuslan 1H
I don't think the order matters at all. Sometimes, it is written in the order of reactants then products, but this isn't a rule and you shouldn't assume it will be that way in a question.