Thermodynamic investigations of sodium-cesium alloys

The investigations of the thermodynamic properties of sodium-cesium alloys were done by means of e.m.f. measurements over a large range of concentrations, temperatures and pressures, using the chain: W/Na(pure)/Na-β-aluminate/Na(alloyed)/W. The left section of the chain responds reversibly to Na+ ions, the right section to electrons. The e.m.f. data of the chain and their variation with concentration, temperature and pressure were used to determine the partial molar quantities of the dissolved sodium relative to the pure solid or liquid sodium, as there are: The partial molar free enthalpy ΔG(Na), the partial molar entropy ΔS(Na), the partial molar enthalpy ΔH(Na), the partial molar heat ΔCp(Na), and the partial molar volume ΔV(Na). (orig.)