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Journal of the Mexican Chemical Society

Print version ISSN 1870-249X


ROY, Mahendra Nath  and  CHAKRABORTI, Palash. Exploration of Diverse Interactions of Some Vitamins in Aqueous Mixtures of Cysteine. J. Mex. Chem. Soc [online]. 2014, vol.58, n.2, pp.106-112. ISSN 1870-249X.

The apparent molar volume (ϕV), viscosity B-coefficient, molal refraction (R) and adiabatic compressibility (ϕK) of Nicotinic Acid, Ascorbic Acid, and Folic Acid have been determined in 0.01, 0.03, 0.05 mol··dm-3 aqueous Cysteine solutions at 298.15 K from density (ρ), viscosity (η), refractive index (nD) and speed of sound (u) respectively. The limiting apparent molar volumes (ϕV0) and experimental slopes (S*V), derived from the Masson equation, have been interpreted in terms of solute-solvent and solute-solute interactions respectively. The viscosity data were analyzed using the Jones-Dole equation and the derived parameters A and B have also been interpreted in terms of solute-solute and solute-solvent interactions respectively in the solutions. Using the Lorentz-Lorenz equation, molal refractions (R) have been calculated. At infinite dilution, limiting apparent molar adiabatic compressibilities (ϕK0) of these vitamins were evaluated and discussed.

Keywords : Apparent molar volume; solute-solvent interaction; solute-solute Interaction; cysteine; nicotinic acid; ascorbic acid; folic acid.

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