Relation Between Pressure and Concentration Difference Across Membranes Permeable to Solute and Solvent

Publisher Website
Google Scholar
Abstract
Expts. with collodion membranes and non-electrolytes show, as expected from theoretical considerations, that the classical van''t Hoff equation cannot be employed to ascertain the relation between pressure and concn. difference in osmotic systems involving membranes permeable to both solute and solvent. The osmotic transport rate is a function of the nature of the solute as well as the concn. difference. The appln. of van''t Hoff''s equation to such systems may lead to errors of several orders of magnitude. The importance of the observations to studies on transport across the capillary wall is discussed.