Writing cell diagram: figuring out order

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Rachael_1H
Posts: 31
Joined: Fri Sep 25, 2015 3:00 am

Writing cell diagram: figuring out order

Postby Rachael_1H » Thu Feb 04, 2016 9:59 am

When Writing a Cell Diagram, how do we know which order to put the different molecules of the anodes and cathodes in? For instance with the anode: Ag --->Ag+ + e- and the cathode: O3 + H2O + 2e- ---> O2 + 2OH- , the cell diagram is: Ag(s)|Ag+(aq)||OH-(aq)|O3(g),O2(g)|Pt(s)
My question is: why is Ag placed before Ag+ in th cell diagram? And why is OH- placed before O3 and O3 before O2 in the cell diagram? Does this order matter? Or does it only matter that anode on left and cathode on right?

604607619
Posts: 22
Joined: Fri Sep 25, 2015 3:00 am

Re: Writing cell diagram: figuring out order

Postby 604607619 » Thu Feb 04, 2016 10:25 am

so the order goes anode to cathode. the anode is the molecule being oxidized which silver because it loses an electron. It goes from Ag to Ag+. That is why the cell diagram starts with Ag.


Armin Ghomeshi

Alexander Vong 3I
Posts: 56
Joined: Fri Sep 25, 2015 3:00 am

Re: Writing cell diagram: figuring out order

Postby Alexander Vong 3I » Sat Feb 06, 2016 10:16 pm

OH- is placed to the left of the Oxygens because it represents the solution that is connected to the salt bridge.


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