Negative solvent pressure in osmosis: A Gedanken experiment
- 76 Downloads
A hypothetical experiment illustrates the relationship between the chemical potential of a solvent in a solution and the partial pressures of the solvent and solute. Hydrostatic and osmotic pressure differences which produce equal transmembrane solvent flows are compared. Results indicate that chemical-potential and partial-pressure descriptions of a solution are both consistent with the concept of a negative absolute solvent pressure.
KeywordsPolymer Statistical Physic Partial Pressure Pressure Difference Osmotic Pressure
Unable to display preview. Download preview PDF.
- 1.Scholander, P. F., Hammel, H. T., Bradstreet, E. D., and Hemmingsen, E. A., "Sap Pressure in Vascular Plants,"Science, 148 (1965) 339.Google Scholar
- 2.Scholander, P. F., "Osmotic Mechanism and Negative Pressure,"Science, 156 (1967) 67.Google Scholar
- 3.Scholander, P. F., "Tensile Water,"Am. Sci., 60 (1972) 584.Google Scholar
- 5.Hammel, H. T., and Scholander, P. F.,Osmosis and Tensile Solvent, (Springer-Verlag, Berlin, 1976).Google Scholar
- 6.Hammel, H. T., "Colligative Properties of a Solution,"Science, 192 (1976) 748.Google Scholar
- 7.Rawlins, S. L., and Oster, J. D., "Osmotic Mechanism and Negative Pressure,"Science, 158 (1967) 1210.Google Scholar
- 8.Plesset, M. S., "Tensile Water,"Am. Sci., 61 (1973) 142.Google Scholar
- 9.Andrews, F. C., "Colligative Properties of Simple Solutions,"Science, 194 (1976) 567.Google Scholar
- 10.Howard, R. and Bradner, H., "Inconsistency of the van't Hoff-Scholander Mechanism of Osmosis,"Physiology Teacher, 6, No. 5 (1977) 6.Google Scholar
- 11.Roedder, E., "Metastable Superheated Ice in Liquid-Water Inclusions under High Negative Pressure,"Science, 155 (1967) 1413.Google Scholar
- 12.Mauro, A., "Osmotic Flow in a Rigid Porous Membrane,"Science, 149 (1965) 867.Google Scholar