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International Journal of Thermophysics

, Volume 32, Issue 10, pp 2062–2078 | Cite as

Physicochemical Properties of L-Alanine in Aqueous Silver Sulphate Solutions at (298.15, 308.15, and 318.15) K

  • Biswajit Sinha
  • Abhijit Sarkar
  • Pran Kumar Roy
  • Dhiraj Brahman
Article

Abstract

Apparent molar volumes \({(\varphi_V)}\) and viscosity B coefficients for L-alanine in (0.005, 0.010, 0.015, and 0.020) mol · dm−3 aqueous silver sulphate (Ag2SO4) solutions were determined from the solution density and viscosity measurements at (298.15, 308.15, and 318.15) K as a function of amino acid concentration. The standard partial molar volumes \({(\varphi_V^0)}\) and experimental slopes \({(S_V^\ast )}\) obtained from the Masson equation were interpreted in terms of solute–solvent and solute–solute interactions, respectively. To analyze solution viscosities in terms of viscosity B coefficients, the Jones–Dole equation was applied. The structure-making or -breaking ability of the amino acid has also been discussed in terms of the sign of \({(\delta^{2}\varphi_V^0/\delta T^{2})_{P}}\) . The activation parameters of viscous flow for the ternary solutions were also derived and explained in terms of transition state theory.

Keywords

Density L-Alanine Silver sulphate Solute–solvent interactions Viscosity 

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Biswajit Sinha
    • 1
  • Abhijit Sarkar
    • 1
  • Pran Kumar Roy
    • 1
  • Dhiraj Brahman
    • 1
  1. 1.Department of ChemistryUniversity of North BengalDarjeelingIndia

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