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Chemical Kinetics of Homogeneous Systems (Hardcover, 1974 ed.)
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Chemical Kinetics of Homogeneous Systems (Hardcover, 1974 ed.)
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Chemical kinetics aims to explain the factors governing the change
with time of chemical systems. The results enable one to define
optimum technico-economic condi tions (such as the choice of batch
or continuous processes; of concentration, temperature, and
pressure; of whether to use a catalyst) for the preparation of
products, so that kinetics is intimately bound up with many
processes of chemical industry (production, explosions, combustion,
propulsion in air and in space). On another level, kinetic studies
are indispensable for understanding reaction mechanisms, which
implies a de tailed knowledge of the different chemical
intermediates (possibly very transitory) of a chemical reaction.
But in practice it is rarely possible to work with microscopic
quantities of reagents and, with the exception of crossed molecular
beams, all methods give only statistical results concerning a large
number of molecules. Because of this restriction, it has not always
been possible to establish conclusively a reaction mechanism, even
for reactions ap parently simple. Numerous attempts have been made
to calculate rate constants from the physical properties of the
participating molecules; but the introduction of the 'time' factor
into calculations of the distribution of energies of chemical
processes makes this very difficult, so that the elucidation of
mechanisms still depends almost entirely on experi mental studies.
However, several theories have been elab orated which, in giving a
more and more precise picture of the reaction process, have proved
very fruitful, and have become indispensable in designing
experiments."
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