Cell diagram order

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Grace Jansen 2A
Posts: 28
Joined: Sat Jul 20, 2019 12:16 am

Cell diagram order

Postby Grace Jansen 2A » Sat Feb 29, 2020 6:36 pm

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)?

Tyler Angtuaco 1G
Posts: 130
Joined: Wed Sep 11, 2019 12:16 am

Re: Cell diagram order

Postby Tyler Angtuaco 1G » Sat Feb 29, 2020 6:39 pm

No, the order of those two ions is not important.

Rory Simpson 2F
Posts: 106
Joined: Fri Aug 09, 2019 12:17 am

Re: Cell diagram order

Postby Rory Simpson 2F » Sat Feb 29, 2020 7:08 pm

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.

Lauren Tanaka 1A
Posts: 109
Joined: Sat Aug 17, 2019 12:18 am

Re: Cell diagram order

Postby Lauren Tanaka 1A » Sat Feb 29, 2020 8:39 pm

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.

Daria MacAuslan 1H
Posts: 50
Joined: Sat Aug 17, 2019 12:16 am

Re: Cell diagram order

Postby Daria MacAuslan 1H » Sat Feb 29, 2020 9:12 pm

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.

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