单词 | osmotic pressure |
释义 | osmotic pressure [äz`mäd·ik `presh·ǝr] PHYSICAL CHEMISTRY 1. 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. 2. 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. |
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