Thermodynamic properties of liquid sodium-caesium alloys

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Abstract
A comprehensive description of the thermodynamic properties of liquid Na-Cs is presented, all derived from the EMF, E(c,T,p), of a concentration cell in which sodium beta alumina was the separator. The alloy heat capacity was found to vary linearly between the pure component values, and the small departures of the expansivity and compressibility from ideal behaviour are attributable to the volume contraction on mixing. There is no evidence for the existence of Na2Cs clusters in the liquid in either the heat capacity data or the variation of the correlation function Scc(0) with concentration.