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Apparent molar volumes of some amino acids and peptides in aqueous urea solutions

โœ Scribed by A. K. Mishra; K. P. Prasad; J. C. Ahluwalia

Publisher
Wiley (John Wiley & Sons)
Year
1983
Tongue
English
Weight
592 KB
Volume
22
Category
Article
ISSN
0006-3525

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โœฆ Synopsis

Densities of solutions of several a-amino acids and peptides in 3 and 6m aqueous urea solvents have been determined at 298.15 K. These data have been used to evaluate the infinite-dilution apparent molar volumes of the solutes and the volume changes due to transfer (7;) of the a-amino acids and peptides at infinite dilution from water to aqueous urea solutions. The sign and magnitude of the vtr values have been rationalized in the framework of Friedman's cosphere-overlap model. The v; values for the glycyl group (-CH&ONH-) and alkyl side chains have been estimated.

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