Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1021/jp036650h
Title (Primary) Free energy of transfer of a solute and its relation to the partition constant
Author Goss, K.-U.
Source Titel Journal of Physical Chemistry B
Year 2003
Department AUC
Volume 107
Issue 50
Page From 14025
Page To 14029
Language englisch
Abstract There is an ongoing debate in the literature about the correct relationship between the free energy of transfer of a molecule i between two phases 1 and 2, ΔG°i12, and the corresponding partition constant, Kci12. This work presents experimental evidence, based on data from the literature, indicating that the unit molar concentration scale is close to the correct standard state. However, a discrepancy remains that appears to be related to the free volume in the liquid phase, as has been postulated before by Vitha and Carr. This discrepancy can be quantified by an empirical linear regression with the surface tension of the respective liquid phase. Other approaches that account for an additional entropy contribution arising from differences in the molar volume of the solvents are disproved by these data. This finding has consequences for Raoult's law convention and the Flory−Huggins theory.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=4843
Goss, K.-U. (2003):
Free energy of transfer of a solute and its relation to the partition constant
J. Phys. Chem. B 107 (50), 14025 - 14029 10.1021/jp036650h