Solution thermodynamics of sodium pyruvate in aqueous glycine solutions at T = (298.15-313.15 K)

Bijan Kumar Pandit, Abhijit Sarkar, Biswajit Sinha

Abstract


In this study, the effects of sodium pyruvate on the solution thermo­dynamics of glycine were investigated in terms of the solute–solute and solute–
–solvent interactions in aqueous solutions. The measured density and viscosity were used to derive the apparent molar volumes (φV), partial molar volumes () and viscosity B-coefficients at 298.15, 303.15, 308.15 and 318.15 K under ambient pressure. The interactions are further discussed in terms of ion–dipolar, hydrophobic–hydrophobic, hydrophilic–hydrophobic group inter­actions. The activation parameters of viscous flow are also discus­sed in terms of the transition state theory. The overall results indicated that ion–hydrophilic and hydrophilic–hydrophilic group interactions are predomin­ant in the ternary solutions.

Keywords


partial molar volumes; viscosity B-coefficients; glycine; sodium pyruvate

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DOI: https://doi.org/10.2298/JSC151031034P

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