large "humps" in the j curves with well marked positive deviations from the theoretical limiting law. Eight of the alkali salts show no positive deviation at all, and that of lithium chloride is less than one-tenth of that of the ammonium salts. The behavior of the ammonium salts is still unexplained, but the present work shows conclusively that it is not due to a systematic error in our measurements. To make doubly sure on this score, since ammonium bromide showed the largest "hump," the alkali bromides were purified and their concentrations were determined by the same method as had been used for the ammonium salt.Cambridge, Mass.
obtained, as well as the literature values, are given in Table V.Terminal and symmetrically substituted acetylenes yield only one hydration product, the methyl or symmetrical ketone, respectively. Hydration of unsymmetrical acetylenes differs in that it results in a mixture of two ketones. The data in Table V show that the procedure gives inconclusive results with these acetylenes because of the difficulty in separating the mixture of products formed.The epoxidation-hydroxamation test was used with all the acetylenic compounds in Table I and found to give negative results which are listed in
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