Effect of solvent on the partial molal volumes and heat capacities of nonelectrolytes |
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| Authors: | Raymond N French Cecil M Criss |
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| Institution: | (1) Department of Chemistry, University of Miami, P. O. Box 249118, 33124 Coral Gables, Florida;(2) Present address: Chemical Engineering Department, Shell Development Company, Houston, Texas |
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| Abstract: | Group contributions to
in seven solvents and to
in three solvents have been tabulated. The variation of
group parameters is discussed in terms of the solvent compressibility coefficient,  T. The scaled particle theory (SPT) is used to calculate cavity contributions to
and  C
p2
o
. Interaction contributions are obtained from the cavity terms and
and
values estimated through the additivity schemes.
values are more sensitive to solute-solvent interactions than
in water and less sensitive in methanol. The SPT results for heat capacities support the concept of structural promotion by hydrophobic solutes in water. |
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| Keywords: | Partial molal heat capacities partial molal volumes group additivity nonelectrolytes scaled particle theory hydrophobic hydration |
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