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: ...equation. This action, which apparently is merely due to the presence of the substance, is called 1 Tram. Chern. Soc., 99, 637, 1911. catalysis, the accelerating substance being called a catalyser or catalyst. There are two sorts of catalysis--homogeneous and heterogeneous. We are only dealing with homogeneous at ...
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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: ...equation. This action, which apparently is merely due to the presence of the substance, is called 1 Tram. Chern. Soc., 99, 637, 1911. catalysis, the accelerating substance being called a catalyser or catalyst. There are two sorts of catalysis--homogeneous and heterogeneous. We are only dealing with homogeneous at present, i.e. the catalysis due to some substance which itself dissolves in the solution in which the reaction is taking place. The typical example of a reaction which can be catalysed is the conversion of cane sugar into dextrose and laevulose in aqueous solution. At ordinary temperatures this takes place very slowly, the reaction equation being--C12H22O1X + H20-- C6H1206 + CBH1208 When, however, we add acids such as HCl, HN03, H2S04, the reaction goes much faster and further, the speed depends on the concentration of the catalyst. For dilute solutions of the acid the reaction velocity is practically proportional to the equivalent conductivity of the acid (Ostwald, J. prakt. Chem., 28, 449. 1883; 29, 385, 1884; 30, 93, 1884). Now the only thing these and other acids have in common is the H atom, which on the electrolytic dissociation theory becomes H" ion, and the catalysis is considered as due to this. Further, on the theory the concentration of the H' ion is the ratio 00 and since A., as shown by Kohlrausch, has very much the same value for all acids, it would follow that the relative catalytic effect of different acids should be proportional to the equivalent conductivity. Ostwald obtained the numbers given in the following table for A and x (the velocity of inversion of the sugar). We shall study velocity of reactions later on by themselves, and see then the exact meaning of The equivalent conductivity of HC1 (in 1 normal solu...
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This is an ex-library book and may have the usual library/used-book markings inside. This book has soft covers. In poor condition, suitable as a reading copy. Please note the Image in this listing is a stock photo and may not match the covers of the actual item, 700grams, ISBN:
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Volume 2. This is an ex-library book and may have the usual library/used-book markings inside. This book has hardback covers. In fair condition, suitable as a study 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, 850grams, ISBN:
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This is an ex-library book and may have the usual library/used-book markings inside. This book has soft covers. In poor condition, suitable as a reading copy. Please note the Image in this listing is a stock photo and may not match the covers of the actual item, 450grams, ISBN:
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Seller's Description:
Volume 2. This is an ex-library book and may have the usual library/used-book markings inside. This book has hardback covers. Clean from markings. 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, 800grams, ISBN:
