By Margaret H. Back, Keith J. Laidler
Chosen Readings in Chemical Kinetics covers excerpts from 12 papers within the box of normal and gas-phase kinetics. The ebook discusses papers at the legislation of connexion among the stipulations of a chemical switch and its volume; at the response pace of the inversion of the cane sugar by way of acids; and the calculation in absolute degree of pace constants and equilibrium constants in gaseous structures. The textual content then tackles papers on easy fuel reactions; at the absolute expense of reactions in condensed levels; at the radiation idea of chemical motion; and at the idea of unimolecular reactions. Papers at the theories of unimolecular reactions at low pressures; at the response among hydrogen and bromine; and at the oxidation of phosphorus vapor at low pressures also are thought of. The ebook extra describes papers at the thermal decomposition of natural compounds from the perspective of loose radicals; in addition to on a unmarried chain mechanism for the thermal decomposition of hydrocarbons. The ebook can be important to scholars of chemical kinetics.
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Extra resources for Selected Readings in Chemical Kinetics
Sample text
ARRHENIUS [The so-called "Arrhenius law", which relates the rate constant £ of a reaction to the absolute temperature Γ, is one of the most fundamental in chemical kinetics. The relationship may be expressed as k = Ae-ElRT (1) where A and E are constants and R is the gas constant. Its general form appears to have been first discovered empirically by J. J. Hood {Phil. Mag. 6, 371 (1878); 20, 323 (1885)). Some significance was given to the law by a thermodynamical argument due to J. H. van't Hoff, and this is summarized by Arrhenius in the passage quoted below.
12. It can be seen that the form of the energy map is slightly different from that of X-Z distance, o A FIG. 12 Fig. 7, in that instead of a saddle a somewhat depressed plateau appears; this is separated from the initial and final valleys by two barriers, gradually rising from the high plateau. Such plateaux can, however, hardly occur in reality, because when the coulombic terms are added an energy basin appears instead of the plateau ; this hole would be sufficiently deep to allow the formation of a ON SIMPLE GAS REACTIONS 63 stable H 3 molecule.
18, 915 (1930). P. M. Morse, Physic. Rev. 34, 57 (1929). 50 CHEMICAL KINETICS are given in Fig. 4, have been computed from equation (6) using the constants given in Table 1. TABLE 1 u Bond b" V M 4264 2559 326-1 37,000 29,730 15,910 H-H H-Br Br-Br 144-4 1-2 n r0 (wave numbers, cm- 1 ) 0-5 0-988 40-0 0-75 1-42 2-26 2132 1279 163 r, distance between atoms, II 0 r 10 20 Ü -se si c ω "5 c