Enthalpies of Phase Changes, Cohesive Energies, and Heat Capacities

2 Enthalpies of Phase Changes, Cohesive Energies, and Heat Capacities 

The molar enthalpies of melting, A j/f, and of vaporization, Av// are important quantities characterizing molten salts. The enthalpies of melting, A , shown in Table 3.8 for uni-univalent salts pertain to the melting point temperature, T, because most high melting salts do not supercool appreciably nor can retain crystalline states above T. The vapor pressures of molten salts are expressed as either the simpler or as some extended equatimi  

For all the salts with univalent cations the A /f values and the Av// values, as reported in [2] at the normal boiling point 7b, are reproduced in Table 3.8. Similar 

The cohesive energy of molecular liquids is related to their enthalpy of vaporization, ce = AyH - RT. However, because the vaporization of molten salts at the 

The derived cohesive energies at the corresponding temperature l.lTm are shown in Table 3.10. Included also in this table are the cohesive energy densities, ced, at the same temperature, using the molar volumes reported in Sect. 3.3.3 in Tables 3.13 and 3.14. Where no entries for ced are shown in Table 3.10 the reason is lack of density data for the molten salt. 

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