ULTRASONIC STUDY OF SOME AMINO ACIDS IN AQUEOUS SALT SOLUTION OF KNO3 AT 303.15K

M.Sathish, G.Meenakshi

Abstract: Apparent molar compressibilities (fk) and apparent molar volume (fv) of L-valine, L-leucine andL-phenylalanine in aqueous solution of KNO3 at different concentrations have been determined at the temperature 303.15K using a standard ultrasonic frequency of 2 MHz. The above parameters can be evaluated from precise density, ultrasonic velocity and time flow measurements using a specific gravity bottle, ultrasonic single frequency interferometer and Ostwald type capillary viscometer respectively. With the help of these results various ultrasonic derived parameters such as limiting apparent molar compressibilities (fk o ), limiting apparent molar volumes (fv o ), and their constants (Sk , Sv), viscosity A & B-coefficients and the corresponding transfer parameters (?fk o , ?fv o and ?B), have been evaluated. The results have been interpreted in the light of intermolecular interactions between solute and solvent.

Keywords: Amino acid, apparent molar compressibility, apparent molar volume, transfer parameter, viscosity Bcoefficients.

DOI: https://doi.org/10.15623/ijret.2014.0302056