The Student Room Group

Electrochemistry

7a).

Can someone explain why you only need one pt electrode

Also, for cell representation when do you use it?

http://filestore.aqa.org.uk/subjects/AQA-CHEM5-QP-JAN13.PDF
It tells you not to draw the standard hydrogen electrode, so you're only drawing the Fe2+/Fe3+ half cell, not both of them.

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