Abstract

The Gordon parameter (g/V₂^1/2(dyne mol^1/2)/cm²) of solutions of NaNO₃, NaCl and CH₃COONa binary mixtures of water in composition range 0.4 to 8.7, 0.6 to 4.6 and 0.4 to 6.1 mol/kg (m), respectively are reported. The cohesive energy density data are analyzed in terms of aggregation of the water molecules around ionic sphere. The 13 ((dyne mol^1/2)/cm²) value of the Gordon parameter (g/V₂^1/2) was noted for effective aggregation, but with CH₃COONa, the Gordon parameter (g/V₂^1/2) and 0.6 to 2.8 m NaCl, the values were less than 13, whereas from 2.9 to 4.6 m NaCl, they were 2 times higher than 13. The dilute NaNO₃ solutions produced lower values and the concentrated solutions produced in manifold higher values than 13.

Key words: Cohesive energy, binary mixtures, molecular interactions, cohesive energy density, survismeter.