| 单词 | Trouton |
| 释义 | Trouton Physics.|ˈtraʊtən|
[The name of F. T. Trouton (1863–1922), Irish physicist, who published the observation in 1884 (Phil. Mag. XVIII. 54).]
Trouton's law or Trouton's rule: the observation that for many substances the latent heat of vaporization of one mole, divided by the absolute temperature of the boiling point, is a constant (Trouton('s) constant) equal to approximately 88 joules per kelvin.
1899J. Walker Introd. Physical Chem. xii. 124 If the substance is in the state of vapour, the heat of vaporisation must be added to the thermochemical data for the liquid. This correction is often considerable, amounting approximately to one-fourth of the value of the boiling point of the substance on the absolute scale (Trouton's rule). 1901Jrnl. Chem. Soc. LXXX. ii. 372 The author states that if the heat of fusion is added to the heat of vaporisation for the determination of Trouton's constant, the quotient then obtained agrees with that found for dissociation. 1922Glazebrook Dict. Appl. Physics I. 561/2 It was shown by Despretz in 1823 that some relationship of the form given above by Trouton held, and later Pictet (1876), Ramsay (1877), rediscovered it independently, but it is now generally referred to as Trouton's law. 1966[see polar a. 3 b]. 1982A. M. Lesk Introd. Physical Chem. iv. 71 Enthalpies of vaporization of unassociated substances follow Trouton's rule. |
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