The physical properties i.e. Density, viscosity and conductance have been measured for calcium chloride in 2, 4 and 6 wt. % of sorbitol in 0.01 m aq. NaCl at 303.15, 308.15, 313.15 and 318.15 K. The experimental data was used for the evaluation of various thermodynamic parameters such as apparent molar volume (φv), limiting apparent molar volume (φ0v), its constant (Šv), apparent molar expansibilities (φ0E), viscosity coefficients A and B and limiting molar conductance (Λ0m) etc. By which molecular interactions i.e. Solute-solvent and solute-solute has been interpreted. The structure making/breaking capacity of calcium chloride has been inferred from the sign of [∂ 2φ 0v/∂T 2], dB/dT and temperature dependence of Walden product d(Λ omη >o)/dT. The results showed that calcium chloride acts as structure-breaker in 2, 4 and 6 wt. % of sorbitol in 0.01 m aq. NaCl. The activation parameters of viscous flow were also determined and discussed by the application of transition state theory.
Apparent molar volume, Viscosity coefficients, Limiting molar conductance, Structure-breaker, Transition state theory