Abstract
The e.m.f.'s of concentration cells with transference containing PbC12 + CsCl molten mixtures have been measured as functions of temperature and electrolyte composition. Graphs of cell e.m.f. against temperature are sets of intersecting straight lines, as are graphs of cell e.m.f. against the negative logarithm of the mole fraction of PbCl2. Diffusion potentials for junctions between pure molten PbCl2 and molten PbCl2 + CsCl mixtures have been determined, as functions of temperature and mixture composition. The results are interpreted to indicate the existence of complex lead-chloride ionic species in the mixtures.
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