This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 Excerpt: ...acid of half the strength actually used, (--2), the numbers expressing the concentrations will be doubled, and it will be found by trial that the value of k becomes half that given in the table. Trimolecular Reactions--When three equivalents take part in a chemical change, the reaction is termed trimolecular, and ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 Excerpt: ...acid of half the strength actually used, (--2), the numbers expressing the concentrations will be doubled, and it will be found by trial that the value of k becomes half that given in the table. Trimolecular Reactions--When three equivalents take part in a chemical change, the reaction is termed trimolecular, and several such reactions have been carefully investigated. If, as before, we represent the initial molar concentrations of the reacting substances by a, b and c respectively, and if x is the proportion of each transformed in the time t, the rate of reaction at that time will, according to the law of mass action, be represented by the differential equation---k(d-x)(b-x)(c-x). Such art equation is somewhat difficult to integrate, and we will therefore confine ourselves to the simple case in which the initial concentrations are the same. The equation then becomes dx/d/--k (a-x), which on integration gives for k--k 1 (TM ) / 2a2(a-x) Different cases arise according as the reacting molecules are the same or different. The simplest case, in which the three reacting molecules are the same, is illustrated by the condensation of cyanic acid to cyamelide, represented by the equation 3HCNO = H3C3N303. A case where two only of the reacting molecules are the same is the reaction between ferric and stannous chlorides, represented by the equation 2FeCl3 + SnCl2-SnCl4 + aFeCL, . finally, the reaction between ferrous chloride, potassium chlorate and hydrochloric acid, represented by the equation 6FeCl2 + KC103 + 6HC1 = 6FeCl3 + KC1 + 3H20, has been shown by Noyes and Wason to be proportional to the respective concentrations of the three reacting substances, and is therefore of the third order. As an illustration of a trimolecular change, some of Noyes' results fo...
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Seller's Description:
This is an ex-library book and may have the usual library/used-book markings inside. This book has hardback covers. In poor condition, suitable as a reading copy. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item, 550grams, ISBN:
