The salt families formed with silver halides and lithium or sodium halides were studied in order to investigate demixing in the liquid state. In particular, measurements were carried out on the stable diagonals of the 12 pertinent reciprocal ternaries. Liquid-liquid equilibria were found to occur in the 10 mixtures containing LiF, NaF, LiCl, LiBr and NaCl (the last one only in the presence of Agl).
The miscibility gap, however, could be fully measured only on the four mixtures AgBr+LiCl, Agl + LiCl, AgI+LiBr and Agl+NaCl: for these and for the mixture AgI+ NaBr an “a priori” prediction of the gap was possible on the basis of current thermodynamic theories.
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