title: Forum on osmosis. II. A criticism of "solvent tension" in osmosis.
abstract: Concepts about the liquid state that are inconsistent with the facts are noted, and solvent under tension is one of them. Osmosis is not present in a solution: it is a process in the presence of a semipermeable membrane that can be quantified by the operation of applying a hydrostatic pressure. The classical derivation of the van't Hoff equation from Raoult's law is reviewed. The soundness of the early views of G. H. Lewis has not changed.
mesh_terms: D055598:Chemical Phenomena; D002627:Chemistry, Physical; D008433:Mathematics; D008962:Models, Theoretical; D009997:Osmotic Pressure; D013816:Thermodynamics