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Titolo:
Thermodynamics of the hydrophobic effect
Autore:
del Rio, JM; Jones, MN;
Indirizzi:
Inst Mexicano Petr, Programa Simulac Mol, Mexico City 07730, DF, Mexico Inst Mexicano Petr Mexico City DF Mexico 07730 ico City 07730, DF, Mexico Univ Manchester, Sch Biol Sci, Manchester M13 9PT, Lancs, England Univ Manchester Manchester Lancs England M13 9PT M13 9PT, Lancs, England
Titolo Testata:
JOURNAL OF PHYSICAL CHEMISTRY B
fascicolo: 6, volume: 105, anno: 2001,
pagine: 1200 - 1211
SICI:
1520-6106(20010215)105:6<1200:TOTHE>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
CRITICAL MICELLE CONCENTRATIONS; LIQUID WATER; TEMPERATURE-DEPENDENCE; AQUEOUS-SOLUTIONS; HEAT-CAPACITIES; ENTROPY; MICELLIZATION; ENTHALPIES; SURFACTANT; SOLUBILITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
63
Recensione:
Indirizzi per estratti:
Indirizzo: del Rio, JM Inst Mexicano Petr, Programa Simulac Mol, Eje Cent Lazaro,Cardenas 152,Delegac Gustavo A, Mexico City 07730, DF, Mexico Inst Mexicano Petr Eje Cent Lazaro,Cardenas 152,Delegac Gustavo A Mexico City DF Mexico 07730
Citazione:
J.M. del Rio e M.N. Jones, "Thermodynamics of the hydrophobic effect", J PHYS CH B, 105(6), 2001, pp. 1200-1211

Abstract

A thermodynamic theory is developed describing the transfer process of nonpolar substances from water to their pure state and the micellization process. The basis of the theory is the consideration, experimentally supported,that to a first-order approximation the change in the standard molar entropy (DeltaS(o)) can be consider proportional to the standard molar heat capacity (DeltaC(p)(o)) with proportionality constant, r, independent of the temperature and the pressure. In general it is found that the value of the magnitude of r decreases with the size of the solute molecule until a limiting value. This level of approximation is sufficient to predict observations such as Linear plots between T DeltaS degrees and DeltaH degrees, reduced behavior for surfactants with the temperature, and an important part of accepted phenomenology in the literature about the hydrophobic effect.

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Documento generato il 31/03/20 alle ore 10:17:51