Definitions for "Standard hydrogen electrode"
Keywords:  redox, electrode, hydrogen, nhe, zero
Standard hydrogen electrode is a system in which hydrogen ion and gaseous hydrogen are present in their standard states. The convention is to designate the cell so that the standard hydrogen electrode is written first. H2(g) 2H+(aq) + 2e- The electrode is used as a reference (of zero) for the values of other standard electrode potentials.
an arbitrary reference electrode used with another electrode to measure the standard reduction potential of that cell; the standard reduction potential of the hydrogen electrode is assigned a value of 0.00 V.
This is the electrode made up of the H+/H2 redox couple under standard conditions, against which all standard reduction potentials are measured.