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Journal of Chemical Physics / Volume 125 / Issue 3 / LETTERS TO THE EDITOR / Comments
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J. Chem. Phys. 125, 037101 (2006); http://dx.doi.org/10.1063/1.2213607 (2 pages)

Comment on “Global thermodynamics of hydrophobic cavitation, dewetting, and hydration” [ J. Chem. Phys. 123, 184504 (2005) ]

Giuseppe Graziano

Dipartimento di Scienze Biologiche ed Ambientali, Università del Sannio, Via Port’ Arsa 11, 82100 Benevento, Italy

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(Received 13 April 2006; accepted 22 May 2006; published online 21 July 2006)

It is pointed out that in a Ben-Amotz in a recent article [J. Chem. Phys.123, 184504 (2005) ] attributed a noncorrect meaning to the entropy convergence temperature, claiming that the latter corresponds to the temperature at which the hydration entropy of a series of solutes crosses zero. A short resumé of the entropy convergence phenomenon and of the provided statistical mechanical analyses is accomplished. In addition, it is brought out that the different temperature dependence of the cavity entropy change on increasing the cavity diameter, pointed out by Ben-Amotz, originates from the assumption that the work of cavity creation should be proportional to the experimental surface tension of liquid water for cavities large on a molecular scale.

© 2006 American Institute of Physics

EDITORIALLY RELATED

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  1. Response to "Comment on `Global thermodynamics of hydrophobic cavitation, dewetting, and hydration' [J. Chem. Phys. 123, 184504 (2005)]"
    Dor Ben-Amotz
    J. Chem. Phys. 125, 037102 (2006)JCPSA6000125000003037102000001
  2. Global thermodynamics of hydrophobic cavitation, dewetting, and hydration
    Dor Ben-Amotz
    J. Chem. Phys. 123, 184504 (2005)JCPSA6000123000018184504000001

RELATED DATABASES

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KEYWORDS and PACS

Keywords

solvation, surface tension, entropy, convergence, cavitation, water, thermochemistry

PACS

  • 82.60.Lf

    Thermodynamics of solutions

  • 65.20.-w

    Thermal properties of liquids

  • 68.03.Cd

    Surface tension and related phenomena

  • 82.30.Nr

    Association, addition, insertion, cluster formation

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2213607

PUBLICATION DATA

ISSN

0021-9606 (print)  
1089-7690 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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Figures (click on thumbnails to view enlargements)

FIG.1
Plot of ΔS∙ vs temperature for (A) helium (squares), neon (circles), argon (up triangles), krypton (down triangles), and xenon (diamonds); (B) ethane (squares), propane (circles), butane (up triangles), benzene (down triangles), and toluene (diamonds); and (C) methanol (filled squares), ethanol (filled circles), n-propanol (filled up triangles), n-butanol (filled down triangles), n-pentanol (filled diamonds), n-hexanol (open squares), n-heptanol (open circles), and n-octanol (open diamonds). Data are from Refs. 5 , 6.

FIG.1 Download High Resolution Image (.zip file) | Export Figure to PowerPoint


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