Cell diagrams

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005199302
Posts: 108
Joined: Fri Sep 28, 2018 12:15 am

Cell diagrams

Postby 005199302 » Sun Feb 24, 2019 6:43 pm

I understand that in a cell diagram, the left side are where the anode half reaction and the right side is cathode half reactions. However, I am confused about the order to list each individual element/ion in each half reaction. Is it:

Anode reactant I Anode product II Cathode reactant I cathode product

OR

Anode (solid) I Anode (aq) II Cathode (aq) I Cathode (s)

I've heard different things and was wondering which is correct?

Eshwar Venkat 1F
Posts: 32
Joined: Fri Sep 28, 2018 12:22 am

Re: Cell diagrams

Postby Eshwar Venkat 1F » Sun Feb 24, 2019 6:51 pm

You are always supposed to write a cell diagram in the order of reactants to products. When dealing with metals, the anode is where the oxidation of a solid metal to its ions takes place, and the cathode is where the reduction of another metal's ions into that metal's solid state takes place. In these cases, the solid metals are on the outside of the diagram.


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