The EMF of Na in the liquid Na-Pb system has been measured as a function of temperature using a concentration cell. The associated thermodynamic quantities of mixing Delta G, Delta S and Delta H are obtained, and the deviation from the additivity of specific heat, Delta C p , is also obtained. The curve of the concentration-concentration fluctuation in the long-wavelength limit, S CC (0), obtained from Delta G, shows three kinds of atomic associations at the compositions of Na 4 Pb, NaPb and NaPb, respectively.
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Matsunaga et al. (1983) studied this question.
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