Exploration of Diverse Interactions of Some Vitamins in Aqueous Mixtures of Cysteine
Keywords:Apparent molar volume, solute-solvent interaction, solute-solute Interaction, cysteine, nicotinic acid, ascorbic acid, folic acid
AbstractThe 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 (Φ0V) 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 (Φ0K) of these vitamins were evaluated and discussed.
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