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. 1895 Excerpt: ...of sugar, urea, and alcohol; he also shows that the degree of electrolytic dissociation calculated from the freezing-point of solutions of potassium chloride and sulphuric, trichloracetic, dichloracetic, and nitro-benzoic acids agrees with that calculated from the conductivity; and finds that the dissociation of the ...
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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. 1895 Excerpt: ...of sugar, urea, and alcohol; he also shows that the degree of electrolytic dissociation calculated from the freezing-point of solutions of potassium chloride and sulphuric, trichloracetic, dichloracetic, and nitro-benzoic acids agrees with that calculated from the conductivity; and finds that the dissociation of the last two acids obeys Ostwald's dilution law. Ponsot (no) describes another method, in which he adds pounded ice to the solution, finds the temperature when equilibrium is attained, pours off the solution and determines its concentration by analysis. Two new solvents have been added to the list. Paterno and Montemartini (111) show that paraxylene has a molecular depression of 43. The majority of substances when dissolved in it give normal molecular weights, hydroxy compounds, just as in the case of benzene, being exceptions. According to Lespieau (112) the hydrate H2S04H20 melts at 853 and behaves as a solvent with a definite molecular depression of 48. Noyes and Whitney (113) find that in aqueous solution alkaline aluminates have the formula M Al 02. Borates have a similar formula unless excess of boric acid be present when acid salts are formed. The behaviour of solutions in benzene of some 80 oxy-compounds has been studied by Auwers (114)-If the molecular weight in solutions of medium concentration is abnormally large, he concludes that the substance is a hydroxy compound. Certain derivatives of acetoacetic acid, diacetylacetone, and the oxy-methylene ketones appeared to be ketonic; the acid derivatives of the primary organic bases gave abnormal molecular weights, but the secondary and tertiary compounds gave normal values. Mercaptans differ from the alcohols in showing no aggregation. (Compare pp. 227, 228 and 234.) From the depression of the...
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