3.1  How would you determine the standard electrode potential of the system Mg^{2+} | Mg?
 

Answers (1)

To determine the standard electrode potential of the given system we need to use a hydrogen electrode. In the setup, we shall put a hydrogen electrode as cathode and Mg | MgSO4 as an anode.

                                        

Now we will measure the emf of the cell. This emf will be the standard electrode potential of the magnesium electrode.

E°cell = E° right  – E°left
E°left =0 ( The standard hydrogen electrode is always zero)
Hence
E^{o}cell = E^{o} Mg|Mg^{2+}

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