
%0 Journal Article
%A Hamann, SD 
%T The behaviour of fluids of Quasi-Spherical molecules. IV.  Concerning Trouton's and Hilderbrand's rules
%J Australian Journal of Chemistry
%D 1955/03/01
%V 8
%N 1
%P 21-25
%K 
%R https://doi.org/10.1071/CH9550021
%U https://www.publish.csiro.au/paper/CH9550021 
%X An examination of the theoretical foundations of Trouton's and Hildebrand's rules gives an explanation of the greater generality of Hildebrand's rule. In a group of liquids obeying the principle of corresponding states those with the larger critical volumes Vc have smaller Hildebrand entropies of evaporation. But in many groups of non-polar liquids an increase in Vc is accompanied by a change in the form of the molecular interaction potential (with consequent departure from the principle of corresponding states) and this change can produce a compensating increase in Hildebrand's entropy. 
