## Test 2 Cell Diagram

Maggie Doan 1I
Posts: 61
Joined: Fri Sep 28, 2018 12:24 am

### Test 2 Cell Diagram

When do we use a comma for the cell diagram?
Do we also use a conductor when there is no solid present?

armintaheri
Posts: 68
Joined: Fri Sep 28, 2018 12:26 am

### Re: Test 2 Cell Diagram

a) You use a comma when there are two species in the same phase. For example, if $Fe^{2+}$ is being oxidized to $Fe^{3+}$ in the anode, you use a comma to separate them in the cell diagram, instead of a vertical line.

b} Yes, you use a conductor (usually platinum) when no solid is present.

Chloe Likwong 2K
Posts: 70
Joined: Fri Sep 28, 2018 12:23 am

### Re: Test 2 Cell Diagram

Also, if there is a solid in the reaction, make sure it is conducting (metal). If not, we then add Pt(s).

Jake Gordon 1A
Posts: 61
Joined: Fri Sep 28, 2018 12:15 am

### Re: Test 2 Cell Diagram

comma separates species in the same states

you have to add a conductor if there is no conducting metal or mercury Hg liquid or graphite I believe

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