Normalisation of standard electrode potential series,and evaluation of liquid junction potentials,between different solvents

An experimental procedure for the interrelation of standard electrode potential series in different solvents is described. The standard molar potentials at 25°C of the cesium amalgam electrode in water, ethylene glycol, and methanol are ?1.950, ?1.881, and ?1.800 V, respectively, with ultimate reference to NHE in water. The net contribution of the solvent to the liquid junction potential at the junctions water-ethylene glycol, water-methanol, and methanol-ethylene glycol is 0.028, 0.007, and 0.021 V, respectively (the positive side of the “solvent” junction potential being indicated by the first solvent mentioned for each pair).