Platinum electrodes

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Rucha Kulkarni 2A
Posts: 43
Joined: Fri Sep 29, 2017 7:05 am

Platinum electrodes

Postby Rucha Kulkarni 2A » Sun Feb 18, 2018 7:51 pm

When exactly are platinum electrodes used?
I assumed that it was whenever there wasn't a solid metal involved in the reaction; however there are some questions in the textbook where a platinum electrode is used even when a solid metal is present.

Rana YT 2L
Posts: 49
Joined: Thu Jul 27, 2017 3:01 am

Re: Platinum electrodes

Postby Rana YT 2L » Sun Feb 18, 2018 8:15 pm

platinum electrodes are used when there are no metal solids or only one metal solid. a platinum electrode is not required when BOTH the anode and cathode reactions contain solid metals

Jiun Yue Chung 2I
Posts: 27
Joined: Fri Sep 29, 2017 7:06 am

Re: Platinum electrodes

Postby Jiun Yue Chung 2I » Sun Feb 18, 2018 9:00 pm

Since Platinum is an inert metallic compound, it doesn't affect the cell reaction. Moreover, Platinum is a good electric conductor, so I guess it's often used in this redox reactions.

Bansi Amin 1D
Posts: 51
Joined: Fri Sep 29, 2017 7:05 am
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Re: Platinum electrodes

Postby Bansi Amin 1D » Sun Feb 18, 2018 9:02 pm

Are there any cases where a platinum electrode cannot be used and a different one has to be used? If so, do we need to know that for the purposes of this class?

Scott Chin_1E
Posts: 55
Joined: Sat Jul 22, 2017 3:00 am

Re: Platinum electrodes

Postby Scott Chin_1E » Sun Feb 18, 2018 9:06 pm

I think Professor Lavelle said that Graphite electrodes are used as well because they do not affect the reaction, but Platinum electrodes are the most common (even though they might be extremely expensive, go figure).

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