Pressure which must be applied to a solution to prevent water from flowing in via a semipermeable membrane.
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For aqueous solutions, when determining the mole fraction of water, it is necessary to take into account the ionisation of salts. For example 1 mole of NaCl ionises to 2 moles of ions, and the mole fraction of water reduces accordingly. Historically chemists have found it time consuming to calculate natural logs, so they used molal concentrations ...
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http://en.wikipedia.org/wiki/Osmotic_pressure
(from the article `biosphere`) ...excessive concentrations of ions will impair cellular functioning. Organisms that live in aquatic environments and whose integument is permeable ... ...to utilize the marine environment for feeding. All groups except the esocoid fishes (pike family and related groups) have species that migrate to ... ...
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http://www.britannica.com/eb/a-z/o/35
The hydrostatic pressure produced on the surface of a semipermable membraneby osmosis.
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http://www.chemistry-dictionary.com/definition/osmotic+pressure.php
Where two solutions of different concentration are separated by a membrane which the solvent molecules can move through, but the dissolved particles (solute) can't, the solvent will move from the less concentrated to the more concentrated solution to attempt to equalise the concentrations. The pressure that must be exerted on the solution to stop t...
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http://www.encyclo.co.uk/local/20046
Water tends to move towards dense concentrations of ions. Sugar solutions on the surface of exposed dentine cause water to be drawn out of the dentinal tubules causing which distorts the odontoblast causing pain.
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http://www.encyclo.co.uk/local/20169
The hydrostatic pressure produced on the surface of a semipermable membrane by osmosis.
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http://www.encyclo.co.uk/local/20728
See: osmosis. The pressure required to prevent osmotic flow across a semi permeable membrane separating two solutions of different solute concentration. Equal to the pressure that can be set up by osmotic flow in this system. ... (18 Nov 1997) ...
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http://www.encyclo.co.uk/local/20973
the pressure required to stop osmosis through a semipermeable membrane between a solution and a pure solvent; it is proportional to the osmolality of the solution. See discussion at osmosis. Symbol π.
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http://www.encyclo.co.uk/local/21001
See osmosis. The pressure required to prevent osmotic flow across a semi-permeable membrane separating two solutions of different solute concentration. Equal to the pressure that can be set up by osmotic flow in this system.
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(OP, Π) Type: Term Definitions: 1. the pressure that must be applied to a solution to prevent the passage into it of solvent when solution and pure solvent are separated by a membrane permeable only to the solvent (sometimes less correctly viewed as the force with which the solution attracts solvent through the semipermeable mem...
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http://www.medilexicon.com/medicaldictionary.php?t=71991
(oz-mot;ik) A measure of the tendency of a solution to gain water by osmosis when separated by a membrane from pure water. Directly related to the osmolality of the solution, it is the pressure required to just prevent osmosis.
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http://www.mhhe.com/biosci/abio/glossary.mhtml
[
n] - (physical chemistry) the pressure exerted by a solution necessary to prevent osmosis into that solution when it is separated from the pure solvent by a semipermeable membrane
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http://www.webdictionary.co.uk/definition.php?query=osmotic%20pressure
the force or pressure generated by water diffusing across a semipermeable membrane, driven by differences in solute concentration across the membrane
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https://courses.lumenlearning.com/microbiology/chapter/glossary/
Pressure which must be applied to a solution to prevent water from flowing in via a semipermeable membrane. See also: Osmosis, Reverse Osmosis.
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https://www.encyclo.co.uk/local/20687
noun (physical chemistry) the pressure exerted by a solution necessary to prevent osmosis into that solution when it is separated from the pure solvent by a semipermeable membrane
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https://www.encyclo.co.uk/local/20974
the force that a dissolved substance exerts on a semipermeable membrane, through which it cannot penetrate, when separated by it from pure solvent.
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https://www.infoplease.com/dictionary/osmotic-pressure
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