TITLE:
Viscometric Studies of Some Amino Acids/Peptides in Aqueous K2SO4/KNO3 Solutions at Different Temperatures (298.15 - 323.15 K)
AUTHORS:
Umaima Gazal, Riyazuddeen
KEYWORDS:
Viscosity, Relative Viscosity, Specific Viscosity, B-Coefficient, Activation Parameter, Amino Acid, Peptide, Salt
JOURNAL NAME:
American Journal of Analytical Chemistry,
Vol.14 No.2,
February
28,
2023
ABSTRACT: Viscosities of L-leucine/L-glutamine/L-alanine/glycylglycine + 0.512 mol·kg-1 aqueous K2SO4/0.512mol·kg-1 aqueous KNO3 solutions have been measured as a function of molal concentration of amino acids/peptides at different temperatures (298.15, 303.15, 308.15, 313.15, 318.15 and 323.15) K. Using the viscosity values of the studied systems the viscosity B-coefficients and activation parameters: , , and have been computed. The B-coefficient is a quantity of active solvodynamic measurements of solvated ion and also is overseen through magnitude and form properties of solute, and the basic effects made by means of the solute-solvent functioning. The experimental and computed parameters have been discussed in terms of ion-ion, hydrophilicion and hydrophobicion interactions operative in the systems.