Open AccessPhysiochemical Studies of Some Amino Acidsin Aqueousand Acidic Mediaat Four Temperatures
Author(s) -
Zeena Sh. Mahmoud,
Taghried A. Salman
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1294/5/052025
Subject(s) - molality , chemistry , solvent , thermodynamics , partial specific volume , volume (thermodynamics) , viscosity , amino acid , hydrochloric acid , valine , aqueous solution , inorganic chemistry , organic chemistry , biochemistry , physics , enzyme
This work is concerned with the study of solute-solvent interaction of amino acids: [DL-Valine, DL-Methionine and L-Arginine] as solutes in water and in hydrochloric acid solution (0.1 mol.L. −1 ) as solvents. This study covered experimental measurements of partial molal volume from precise density measurements using Anton Paar (DMA 60/602) densimeter, as well as theoretical calculations concerning partial molal volume, and some related parameters, a comparison and discussion was made in the light of these measurements. Measurements of the dynamic viscosities of amino acids solutions have been done over concentration variation from (0.04-0.2 mol.L. −1 ) at four temperatures in the range of (293.15-308.15)K. The resulting data have been utilized to verity the validity of Jones and Dole equation, and the viscous behaviour of the systems have been interpreted with regard to the contributions of the various viscosity components and the arrangements of solvent molecules. It was found that B-coefficient of amino acids in this study flow the order: Methionine >Valine > Arginine > This study clarifies that each of B-Coefficient, Partial Molal Volume, Van der Waal’s Volume and Effective Flow Volume can be considerd as parameters to account for solute-solvent interaction