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By: Priyanka bhukya, Prof. Shaukat Shah, and Dr. Ashish Wakulkar
Dept. of Chemistry, Gondwana University, Gadchiroli, INDIA
The ultrasonic velocity (µ), density (ρ), and viscosity(η) have been measured for aqueous solutions of L- Histidine at various concentrations from 0.01 to 0.1m at different temperatures (293.15, 298.15, 303.15, 308.15, 313.15 and 318.15) K. The constancy of temperature was maintained by the use of a refrigerated bath with water as a circulating medium. From experimental data, acoustic parameters such as isentropic compressibility (βa), isothermal compressibility (βi), apparent molar volume (Φ v ), partial molar volume (Φ v 0 ), Viscosity coefficients B and A, and hydration number (n h ) have been calculated using standard relations. These parameters have been further used to interpret the type of molecular interactions such as van der Waals forces, dipole-dipole interactions, hydrogen bonding, solute-solvent, solute-solute interactions, etc. present in the system investigated.
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