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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/9822

Title: Apparent molar heat capacities and apparent molar volumes of aqueous 1,1,1,3,3,3-hexafluoroisopropanol at different temperatures
Authors: KUNDU, A
KISHORE, N
Keywords: thermodynamic properties
transport-properties
cytochrome-c
hexafluoroisopropanol
water
aggregation
proteins
alcohols
peptides
state
Issue Date: 2004
Publisher: KLUWER ACADEMIC/PLENUM PUBL
Citation: JOURNAL OF SOLUTION CHEMISTRY, 33(9), 1085-1095
Abstract: Specific heats and apparent molar heat capacities of aqueous 1,1,1,3,3,3-hexafluoroisoproanol (HFIP) have been determined at temperatures from 20.0 to 45.0degreesC using micro differential scanning calorimetry in the molality range of 0.06741 to 1.24053 mol-kg(-1). Densities and apparent molar volumes have also been determined for aqueous HFIP at temperatures from 10.3 to 30.0degreesC using digital densimetry in the molality range of 0.04009 to 0.67427 mol-kg(-1). The results of these measurements have been used to calculate the following partial molar quantities and temperature derivatives for aqueous HFIP as a function of temperature: C(p,2,m)degrees, (partial derivativeC(p,2,m)degrees/partial derivativeT)(p), (partial derivative(2)C(p,2,m)degrees/partial derivativeT(2))(p), V(2,m)degrees and (partial derivativeV(2,m)degrees/partial derivativeT)(p). The contribution of the -F atom to the partial molar heat capacity and volume has been calculated. The results have been explained in terms of structural changes in water in aqueous HFIP solution. The results obtained in this work contain essential information needed for the development of an equation of state for this system, when used in combination with other thermodynamic properties of aqueous HFIP.
URI: http://dx.doi.org/10.1023/B:JOSL.0000048058.32021.98
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9822
http://hdl.handle.net/10054/9822
ISSN: 0095-9782
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