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Viscosities of l-Phenylalanine, l-Leucine, l-Glutamic Acid, or l-Proline + 2.0 mol·dm−3 Aqueous NaCl or 2.0 mol·dm−3 Aqueous NaNO3 Solutions at T = (298.15 to 328.15) K

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Department of Chemistry, Aligarh Muslim University, Aligarh 202002, UP, India
* To whom correspondence should be addressed. E-mail: [email protected]. Tel.: + 91 571 2703515.
Cite this: J. Chem. Eng. Data 2010, 55, 9, 3282–3285
Publication Date (Web):April 23, 2010
https://doi.org/10.1021/je1000878
Copyright © 2010 American Chemical Society

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    Abstract

    Viscosity coefficients of l-phenylalanine, l-leucine, l-glutamic acid, or l-proline in 2.0 mol·dm−3 aqueous NaCl or 2.0 mol·dm−3 aqueous NaNO3 systems have been determined as a function of molal concentrations of amino acids at temperatures of (298.15, 303.15, 308.15, 313.15, 318.15, 323.15, and 328.15) K. Viscosity coefficients vary linearly with an increase in molal concentration of the amino acids. The trends of variation of viscosity values with an increase in molal concentration of l-phenylalanine, l-leucine, l-glutamic acid, and l-proline in 2.0 mol·dm−3 aqueous NaCl and 2.0 mol·dm−3 aqueous NaNO3 solutions and with an increase in temperature have been ascribed to the solute−solvent interactions operative in the solutions. The computed Jones−Dole B-coefficients have been also interpreted in terms of solute−solvent interactions.

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