The reduction potential of H+ to H2 in acidic conditions is +0.00, making the reaction occur easily.

In fact, you could use any metal which has a large positive reduction potential, including platinum.

The following table provides the reduction potentials of the indicated reducing agent at 25 C.

But it has a more negative reduction potential from its 3+ ion.

These are simply the negative of standard reduction potentials, so it is not a major problem in practice.

Alternatively, it may be necessary to convert measurements to the standard reduction potential for reporting purposes.

The standard reduction potentials for aqueous solutions are shown in the next table.

The driving force is the difference in reduction potentials between the two dissimilar metals.

The reference electrode is a half cell with a known reduction potential.

By comparison, the standard reduction potential for ferrodoxins is about 430 mV.