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Cell Diagram Order (14.11)

Posted: Sun Feb 18, 2018 11:47 pm
by Hannah Chew 2A
Can anyone explain the order of the cell diagram? I thought it was reactant first and product second, but in several problems, I found it to be inconsistent.
Ex) 14.11 b) Cl- is written first but is a product.
14.11 e) Cl- / Hg2Cl2 / Hg is written like this in the book, but Cl- and Hg are both products.

Re: Cell Diagram Order (14.11)

Posted: Mon Feb 19, 2018 8:52 am
by Swetha Sundaram 1E
I have a similar question and also on part c why is it written as ||Ce4+,Ce3+| because I thought it was supposed to be written as ||Ce4+|Ce3+

Re: Cell Diagram Order (14.11)

Posted: Mon Feb 19, 2018 10:40 am
by Jessica Lutz 2E
Swetha Sundaram 1E wrote:I have a similar question and also on part c why is it written as ||Ce4+,Ce3+| because I thought it was supposed to be written as ||Ce4+|Ce3+


There is a comma because they are both aqueous and | indicates a change in phase. Also, I don't think the order for that matters because they are both mixed in an aqueous solution (someone correct me if I'm wrong on that).

Re: Cell Diagram Order (14.11)

Posted: Mon Feb 19, 2018 2:10 pm
by Hannah Chew 2A
The oxidized form should be before the reduced form if both are the same phase. But can anyone answer my original question?

Re: Cell Diagram Order (14.11)  [ENDORSED]

Posted: Wed Feb 21, 2018 11:41 am
by Chem_Mod
For cell diagram, within each half part, electrode and solids are written far away from the salt bridge, followed by liquid, gas and aqueous solution. Within each phase, orders are not strictly defined, but people tend to put in the order of reactant to product.