Premium
The Solubility of Fine Particles and the Supersaturated Solution
Author(s) -
Glasner Abraham
Publication year - 1975
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.197500011
Subject(s) - supersaturation , ostwald ripening , chemistry , nucleation , solubility , impurity , suspension (topology) , chemical physics , thermodynamics , particle (ecology) , organic chemistry , physics , oceanography , mathematics , homotopy , pure mathematics , geology
Supersaturated solutions equilibrated with fine particles remain stable, when thermostated for long periods, i.e., “Ostwald ripening” is rather slow. It is argued that this is because the “excess” solute is contained in the supersaturated solution in the form of bloc nuclei the size of which are nearly as large as that of the fine particles in suspension. In the case of real supersaturated solutions, which invariably contain impurities serving as heterogeneous nucleating agents, also, a quasi equilibrium of bloc nuclei of a narrow size‐distribution is established. This is a logical consequence of the kinetic theory of embryal growth owing to local fluctuations. The heat released by the growing embryos (or bloc nuclei) at any moment is proportional to their increase in surface area.