The electrode potential of the standard hydrogen electrode is 0.00 V. How is this potential determined?

a Any value could be chosen; 0.00 V is assigned for convenience.


b By comparison with the standard Ag | Ag+ electrode.


c By measuring the potential at different atmospheric pressures.


d By measuring the potential at different H+ concentrations.

The electrode potential of the standard hydrogen electrode is 0.00 V. How is this potential determined?
a.