Solvation of large molecules: Some exact results on the dependence on volume and surface area of the solute

A. Ben-Naim

doi:10.1016/0301-4622(94)00041-7

Solvation of large molecules: Some exact results on the dependence on volume and surface area of the solute

A. Ben-Naim^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

The solvation Gibbs and Helmholtz energies are evaluated exactly in two model systems. One is a modification of an interstitial model for water, the second is a non ideal gas mixture within the second virial approximation. In both systems the general form of the solvation Gibbs energy of a large solute s is ΔG_s^* = aV_s + bA_s where V_s and A_s are the volume and surface area of the solute s. We also show that this general form is likely to hold true in any real solution.

Original language	English
Pages (from-to)	203-216
Number of pages	14
Journal	Biophysical Chemistry
Volume	51
Issue number	2-3
DOIs	https://doi.org/10.1016/0301-4622(94)00041-7
State	Published - Aug 1994

Keywords

Gibbs and Helmholtz energies
Large molecules
Solvation

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10.1016/0301-4622(94)00041-7

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abstract = "The solvation Gibbs and Helmholtz energies are evaluated exactly in two model systems. One is a modification of an interstitial model for water, the second is a non ideal gas mixture within the second virial approximation. In both systems the general form of the solvation Gibbs energy of a large solute s is ΔGs* = aV s + bAs where Vs and As are the volume and surface area of the solute s. We also show that this general form is likely to hold true in any real solution.",

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AB - The solvation Gibbs and Helmholtz energies are evaluated exactly in two model systems. One is a modification of an interstitial model for water, the second is a non ideal gas mixture within the second virial approximation. In both systems the general form of the solvation Gibbs energy of a large solute s is ΔGs* = aV s + bAs where Vs and As are the volume and surface area of the solute s. We also show that this general form is likely to hold true in any real solution.

KW - Gibbs and Helmholtz energies

KW - Large molecules

KW - Solvation

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ER -

Solvation of large molecules: Some exact results on the dependence on volume and surface area of the solute

Abstract

Keywords

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