Browsing by Author "Bhat, A.S."

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    Molecular interactions in glycylglycine-mncl2 aqueous solutions at (288.15, 293.15, 298.15, 303.15, 308.15, 313.15, and 318.15) k
    (2009) Santosh, M.S.; Bhat, D.K.; Bhat, A.S.
    The viscosities, ultrasonic velocities, densities, and refractive indices of glycylglycine and MnCl2in water have been studied at different temperatures and concentrations. Excess thermodynamic parameters such as adiabatic compressibility (?ad), apparent molar volume (?V), apparent molar compressibility (?K),intermolecular free length (Lf), specific acoustic impedance (Z), relative association (RA), and salvation number (Sn) have been calculated. The variations in apparent molar volume were confirmed by Scaled particle theory, and the changes in apparent molar compressibilities were interpreted using the Kirkwood model. The variations in apparent molar volumes were fitted with Masson's equation. The viscosity data have been fitted using the Jones-Dole empirical equation. The molecular relaxation of MnCl2and glycylglycine in water gives an idea about solute-solute interactions. The interactions also suggest the formation of H-bonding in the system. The tructure forming tendency of the solute has also been indicated by the solvation number. Copyright& copy; 2009 American Chemical Society.
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    Molecular interactions in glycylglycine-mncl2 aqueous solutions at (288.15, 293.15, 298.15, 303.15, 308.15, 313.15, and 318.15) k
    (2009) Santosh, M.S.; Bhat, D.K.; Bhat, A.S.
    The viscosities, ultrasonic velocities, densities, and refractive indices of glycylglycine and MnCl2in water have been studied at different temperatures and concentrations. Excess thermodynamic parameters such as adiabatic compressibility (?ad), apparent molar volume (?V), apparent molar compressibility (?K),intermolecular free length (Lf), specific acoustic impedance (Z), relative association (RA), and salvation number (Sn) have been calculated. The variations in apparent molar volume were confirmed by Scaled particle theory, and the changes in apparent molar compressibilities were interpreted using the Kirkwood model. The variations in apparent molar volumes were fitted with Masson's equation. The viscosity data have been fitted using the Jones-Dole empirical equation. The molecular relaxation of MnCl2and glycylglycine in water gives an idea about solute-solute interactions. The interactions also suggest the formation of H-bonding in the system. The tructure forming tendency of the solute has also been indicated by the solvation number. Copyright& copy; 2009 American Chemical Society.
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    Volumetric and ultrasonic investigation of glycylglycine in aqueous FeCl3 solutions
    (2010) Santosh, M.S.; Bhat, D.K.; Bhat, A.S.
    Viscosity, ultrasonic velocity and density measurements have been carried out for glycylglycine in aqueous FeCl3 solution as a function of molality at T=288.15 K, 298.15 K and 308.15 K. The experimental data have been used to derive properties such as isentropic compressibility (? S ), change in isentropic compressibility (?? S ), relative change in isentropic compressibility (?? S /? 0), apparent molar compressibility, volume and their limiting apparent molar quantities along with the constants S K, S V and viscosity B-coefficient. The obtained thermodynamic properties have been discussed in terms of molecular interactions. � 2010 Springer Science+Business Media, LLC.
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    Volumetric and ultrasonic investigation of glycylglycine in aqueous FeCl3 solutions
    (2010) Santosh, M.S.; Bhat, D.K.; Bhat, A.S.
    Viscosity, ultrasonic velocity and density measurements have been carried out for glycylglycine in aqueous FeCl3 solution as a function of molality at T=288.15 K, 298.15 K and 308.15 K. The experimental data have been used to derive properties such as isentropic compressibility (? S ), change in isentropic compressibility (?? S ), relative change in isentropic compressibility (?? S /? 0), apparent molar compressibility, volume and their limiting apparent molar quantities along with the constants S K, S V and viscosity B-coefficient. The obtained thermodynamic properties have been discussed in terms of molecular interactions. © 2010 Springer Science+Business Media, LLC.