colligative properties


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Related to colligative properties: Freezing point depression

colligative properties

colligative properties, properties of a solution that depend on the number of solute particles present but not on the chemical properties of the solute. Colligative properties of a solution include freezing point (see freezing), boiling point, osmotic pressure (see osmosis), and solvent vapor pressure. By measuring these properties and comparing them with the corresponding properties of the pure solvent, it is possible to determine the number of particles of solute present in the solution. If the mass of solute present is also known, the number-average molecular weight can be calculated by dividing the mass of solute by the number of particles present to obtain the average mass per particle.
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colligative properties

[kə′lig·ə·div ‚präp·ərd·ēz]
(physical chemistry)
Properties dependent on the number of molecules but not their nature.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Sweeteners functionalities--which include sweetness, flavor and flavor enhancement, freezing point depression, boiling point elevation, caramelization, texturization, moisture management, and heat of dissolution--are largely determined by the size, molecular weight, solubility and colligative properties of the agent in question.
Methods based on colligative properties like osmotic pressure, and Raoult's law yield the number average molecular weight, whereas light scattering methods yield the weight average molecular weight.
[1970]: 'Colligative Properties of Anomalous Water', Nature, 226, pp.