Volumetric and viscometric studies of b-alanine in water and ammonia solution at 293- 313K: structure making and breaking effect

The physicochemical properties of solute in solutions provide valuable information on solute – solvent, solute – solute and solvent – solvent interactions. The intermolecular forces between the liquids molecules and solvent molecules affect the viscosity of the solution. Information regarding inter and intra molecular interactions can be obtained from volumetric, and viscometric data in a solute solvent system. This study reports the volumetric and viscometric properties of solution of :- alanine at the concentration range of 0.05 - 0.5 mol dm-3 in water and liquid ammonia at temperature range of 293 - 313K. Apparent molar volume at infinite dilution ( o v ) was estimated from the least square fit of v vs concentration. Viscosity coefficients A and B were calculated from the viscosity data Jones–Dole equation. Viscosity coefficients A and B were calculated from the viscosity data Jones–Dole equation. The activation parameters for viscous flow # 1# 2 # μ1 ,μ ,S and # 1 H were also estimated using Eyring equation. The data are explained vis-à-vis structure making or breaking effect of : - Alanine in the solvents under conditions of investigation. Keywords: :-Alanine; Liquid ammonia; Apparent molar volume; Infinite dilution; Structure breaking and structure making