| 释义 |
Raoult Physical Chem.|raul(t)|
[The name of François-Marie Raoult (1830–1901), French physical chemist.]
Raoult's law: (a) the freezing point and boiling point of an ideal solution are respectively depressed and elevated relative to that of the pure solvent by an amount proportional to the mole fraction of solute; (b) the vapour pressure of an ideal solution is proportional to the mole fraction of solvent.
The two statements are closely related. In recent use Raoult's law usu. refers to (b).
1892Bedson & Williams tr. L. Meyer's Outl. Theoret. Chem. 137 The molecular weights of other bodies..can be determined by aid of Raoult's Law in the following manner. 1899R. A. Lehfeldt Text-bk. Physical Chem. vi. 269 This result is included in Raoult's law of the lowering of vapour pressure. 1950W. J. Moore Physical Chem. vi. 133 An example exhibiting a positive deviation from Raoult's Law is the system carbon bisulphide-methylal, whose vapor-pressure-composition diagram is shown. 1966Gucker & Seifert Physical Chem. xvii. 465 In the last two diagrams dotted lines represent partial pressures calculated from Raoult's law. 1977Moncrieff & Jones Elem. Physical Chem. xvii. 379 An ideal binary solution is defined as one in which both components obey Raoult's law over the entire concentration range. |