Effect of Temperature and Concentration on Density, Apparent Molar Volume, Ultrasound Velocity, Isoentropic Compressibility, Viscosity, and Conductivity of Hexadecyldimethylethylammonium Bromide

摘要

Physicochemical properties like density, apparent molar volume, ultrasound velocity, isoentropic compressibility, viscosity, and conductivity of aqueous solutions of hexadecyldimethylethylammonoum bromide as a function of concentration at different temperatures ranging from (298.15 to 323.15) K have been determined. Critical micellar concentration values depend upon the technique used. Density data have been used to calculate the apparent molar volume of the surfactant. "Viscosity data have been employed to compute degrees of hydration based on the Vand and Einstien equation. Conductivity measurements have been used to evaluate the degree of counterion binding and various thermodynamic paramaters.