Abstract

ULTRASONIC VELOCITY STUDIES OF AMINO ACIDS IN AQUEOUS TERTIARY BUTYL ALCOHOL AT 303.15K

S. Nagaraj*, M.C.S. Subha, C. Nagamani and K. Chowdoji Rao

ABSTRACT

Ultrasonic velocity and Adiabatic compressibility of Glycine, DL-Alanine, L-Valine and L-Arginine HCL have been measured in Water + Tertiary Butyl Alcohol (TBA) mixtures ranging from pure water to 80% TBA by mass at 303.15K. From the Ultrasonic Velocity, the adiabatic compressibility of the four amino acids in the mixtures has been calculated. From the Ultrasonic Velocity and adiabatic compressibility, apparent molar compressibility, intermolecular free length and change in free energy were calculated. These values were interpreted in terms of structure-breaking or structure making effects of these amino acids in the water + TBA mixtures.

Keywords: Apparent molar volume, Density, Viscosity, Amino acids, Tertiary butyl alcohol.