A2 electrode potentialsWatch
We set up an electrochemical cell. First with copper and zinc. The voltage was -1.01V.
Then with zinc and iron. The voltage was -0.42.
For both it asks- which one is the positive electrode- I'm confused about how to work this out.
The next question was use your results to predict the reaction that would take place and calculate the emf when copper and iron are used.
Please could someone explain, any help is really appreciated as I'm very confused.