DSpace
 

DSpace at IIT Bombay >
IITB Publications >
Article >

Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/3787

Title: Densities, partial molar volumes, and heat capacities of glycine, L-alanine, and L-leucine in aqueous magnesium chloride solutions at different temperatures
Authors: LARK, BS
PATYAR, P
BANIPAL, TS
KISHORE, N
Keywords: amino-acids
adiabatic compressibilities
water
expansibilities
328.15-k
298.15-k
Issue Date: 2004
Publisher: AMER CHEMICAL SOC
Citation: JOURNAL OF CHEMICAL AND ENGINEERING DATA, 49(3), 553-565
Abstract: The apparent molar volumes (V-2,V-phi) have been determined for glycine, L-alanine, and L-leucine in water and in aqueous magnesium chloride solutions with concentrations approximate to (0.05 to 0.80) mol(.)kg(-1) by measuring the densities at (288.15, 298.15, and 308.15) K. The apparent molar heat capacities (C-p2,C-phi) have also been determined for glycine and L-alanine in aqueous magnesium chloride solutions with concentrations (0.05 to 0.40) mol(.)kg(-1) by measuring heat capacities in the temperature range (298.15 to 328.15) K. These properties show a peculiar dependence upon the concentration of magnesium chloride. The standard partial molar volumes at infinite dilution (V-2(infinity)) obtained from these data have been used to calculate the partial molar volumes of transfer of amino acids from water to aqueous magnesium chloride solutions at infinite dilution (Delta(t)V(2)(infinity)), which are positive for the presently studied amino acids at all temperatures and concentrations. The partial molar expansibilities (partial derivativeV(2)(infinity)/partial derivativeT)(p) at infinite dilution and the (partial derivative(2)V(2)(infinity)/partial derivativeT(2))(p) have also been determined from the V-2(infinity) data at various concentrations of the salt. The volumetric interaction parameters have been calculated from Delta(t)V(2)(infinity) data. The results have been discussed in terms of various interactions operating in these systems.
URI: http://dx.doi.org/10.1021/je034168m
http://dspace.library.iitb.ac.in/xmlui/handle/10054/3787
http://hdl.handle.net/10054/3787
ISSN: 0021-9568
Appears in Collections:Article

Files in This Item:

There are no files associated with this item.

View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback