A discussion on surface excess entropies

A quasi thermodynamic interpretation is given for the non-specificity of su rface excess entropies, as opposed to the specificity of surface excess ene rgies. This difference is also observed for the molar entropies and energie s of evaporation (Trouton's rule). Similarities and differences between the processes of surface formation and evaporation are noted and discussed. Th e analysis also covers the various excess amounts of matter in the interfac ial layers. (C) 2001 Elsevier Science B.V. All rights reserved.