6M5

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Amy Xiao 1I
Posts: 101
Joined: Sat Jul 20, 2019 12:15 am

6M5

Postby Amy Xiao 1I » Mon Feb 24, 2020 11:34 pm

In the cell diagram for part (a) in the solutions manual, they do not include Pt(s) on the left side, but it is present on the right side. I thought Pt(s) had to be present on both sides, can someone explain why this happens?

Ryan Chang 1C
Posts: 105
Joined: Sat Aug 24, 2019 12:17 am

Re: 6M5

Postby Ryan Chang 1C » Mon Feb 24, 2020 11:49 pm

An inert electrode only needs to be added when there is no metal present. The cathode and anode are independent of this, meaning that the cathode can have an inert electrode while the anode doesn't, or vice versa. In this case, the anode has a metal present, which is Hg(l), since mercury is a metal in its liquid phase. However, there is no metal present in the cathode, so an inert electrode such as solid Platinum must be added.


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