How the standard reduction potential table is determined!
It is widely accepted that hydrogen has zero reduction and oxidation potentials. As a result, the difference in potential from hydrogen is actually used to calculate the standard reduction and oxidation potential of chemical species.
A voltmeter can be used to measure the potential difference from hydrogen in a galvanic cell that has a half-cell of the unidentified chemical species on one side and a SHE on the other.
Visit:- https://mmsphyschem.com/estandardtable.htm
