Question

How to determine standard electrode potential of mg2+/mg?

Answer 1

Answer:

Use standard hydrogen electrode as anode and Mg2+ | Mg as a cathode we can measure the standard electrode potential of systemMg2+ | Mg. Standard hydrogen electrode, represented by Pt(s), H2(g) (1 atm) | H+ (aq) and dip the electrode of Magnesium wire in a 1M MgSO4 solution .The standard hydrogen electrode is always zero.

Use formula  

E°cell = E° right  – E°left  

The standard hydrogen electrode is always zero.

So that the value of  

E°left =0  

Hence  

E°cell = E° Mg|Mg2+

Or

E° Mg|Mg2+= E°cell

Answer 2

Explanation:

To determine the electrode potential of mg^+2/mg^1 we use hydrogen electrode (anode)

The standard hydrogen electrode potential is zero.

∴E°cell=E°right+E°left

E°cell=E°mg^+2/mg^−1E°n2/n1 

E°mg^+2/mg=E^cell

Hope it helps you.....

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