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osmotic pressure |
Also found in: Dictionary/thesaurus, Medical, Legal, Acronyms, Wikipedia, Hutchinson | 0.03 sec. |
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osmotic pressure [äz′mäd·ik ′presh·ər] (physical chemistry) The applied pressure required to prevent the flow of a solvent across a membrane which offers no obstruction to passage of the solvent, but does not allow passage of the solute, and which separates a solution from the pure solvent. The applied pressure required to prevent passage of a solvent across a membrane which separates solutions of different concentration, and which allows passage of the solute, but may also allow limited passage of the solvent. Also known as osmotic gradient. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| In solution, this ion helps reduce the osmotic pressure of water from 280 to 300 mOsm/kg to 200 mOsm/kg. Water moves freely between intra-cellular and extra-cellular compartments in response to osmotic pressure gradients created by effective solutes (Na+, K+, and mannitol) that are impermeable to the cell membrane (1). A hyposmolar solution with an osmotic pressure of 200mOsm/L, the product helps rehydrate infants, especially when they have diarrhea. |
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