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Ostwald second rule

Reactive crystallization operations are subject to oiling out and/or agglomeration because of the inherently high local supersaturations encountered. As indicated in Section 10.3, the formation of a crystal may be preceded by oiling out as the first physical form that may or may not be observed (see also Chapter 5, Section 5.4). This oil may separate as a second phase because of the normally extremely low solubilities of the reaction products that result from the chemical reaction. This low solubility can cause a second liquid phase to form on a time scale that is shorter than the nucleation induction time. These issues are considered in Ostwald s Rule of Stages. [Pg.217]

This phenomenon of the increased growth of larger crystals compared to smaller ones that have a higher solubihty than the larger ones is known as the second Ostwald rule or the rule of ripening of a new phase. [Pg.283]

Van t Hoff was second only to Ostwald as an important worker in the field of physical chemistry. He worked on the problems of solutions in particular. By 1886 he was able to show that the molecules of dissolved substances, moving randomly through the body of the liquid in which they were dissolved, behaved, in some ways, according to rules analogous to those which described the behavior of gases. [Pg.159]


See other pages where Ostwald second rule is mentioned: [Pg.105]    [Pg.492]    [Pg.406]    [Pg.522]    [Pg.488]    [Pg.597]    [Pg.820]   
See also in sourсe #XX -- [ Pg.283 ]




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