Hi! I understand that for a cell diagram, the anode is on the left, the cathode is on the right, and the electrodes are at the ends... but within the anode or cathode, does it matter what order you write the species in?
e.g. if the anode has 2I-(aq) --> I2(s) + 2e-
and the cathode has 2Ce4+ + 2e- --> 2Ce3+
Would you write Pt(s)|I2(s)|I-(aq)||Ce4+(aq), Ce3+(aq)|Pt(s) (I used Pt at the anode since I2 is not a metal.)
OR would you switch around the I2(s) and I-(aq), or switch around the Ce4+(aq) and Ce3+(aq) for any reason??
Thanks so much!
Order of species in cell diagram?
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Re: Order of species in cell diagram?
Usually you have:
anode ll cathode...
In the cell diagram, you would usually have:
electrode (if needed) l reactant l product ll reactant l product l electrode (if needed)...
anode ll cathode...
In the cell diagram, you would usually have:
electrode (if needed) l reactant l product ll reactant l product l electrode (if needed)...
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Re: Order of species in cell diagram?
I was looking at previous posts about this and I do not think the order matters if it was Ce4+ or Ce3+ as long as you have it on the correct side of the salt bridge.
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Re: Order of species in cell diagram?
You can probably get away with ordering it anyway, but some graders prefer oxidation/reduction.
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