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Postby Sakina_Qadir_3K » Thu Feb 09, 2017 10:25 pm

For part b in this textbook question, why can we ignore C(gr) and Pt(s) when forming the half-reaction equations? Additionally, what is the purpose of those two elements?


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Re: 14.11

Postby Jocelyn_Limas_2G » Thu Feb 09, 2017 10:28 pm

They are inert electrodes-- they don't participate in the reaction, they promote the chemical reactions. I believe that they supply/withdraw electrons (?).

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Re: 14.11

Postby chris2E » Thu Feb 09, 2017 10:59 pm

To add to that, when asked to build a cell diagram, we put inert electrodes such as Pt(s) at both ends whenever both the oxidation and reduction species are in the same solution (for example, when both are aqueous).

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