| 单词 | trouton's law or rule |
| 释义 | > as lemmasTrouton's law or rule Trouton's law or 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. ΘΚΠ the world > matter > physics > electromagnetic radiation > heat > [noun] > latent heat > law relating to Trouton('s) constant1899 1899 J. 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). 1901 Jrnl. Chem. Soc. 80 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. 1922 R. Glazebrook 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 F. T. Gucker & R. L. Seifert Physical Chem. (1967) xi. 276 Both the Trouton and Hildebrand constants are abnormally high for many liquids like water and ammonia, which are known to be polar. 1982 A. M. Lesk Introd. Physical Chem. iv. 71 Enthalpies of vaporization of unassociated substances follow Trouton's rule. < as lemmas |
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