Hydriodic acid s. Hydrogen

Hydride shift 32, 742 Hydride transfer 31,243 Hydriodic acid s. Hydrogen... 

The above relationships appear deceptively simple since they would seem to be predictable from a glance at tbe chemical equation. This is not, however, the case. The decomposition of arsine could have just as well been found to quadruple in rate were arsine s concentration doubled. In this hypothetical case, the reaction rate would be proportional to [AsH3]. Van t Hoff noted that first-order and second-order reactions are relatively common, and third-order reactions are uncommon. He provided the example of the oxidation of hydriodic acid by hydrogen peroxide ... 

In the second paper he describes iodine monochloride (chlorionic acid), composed of one proportion of iodine, and one of chlorine , and the bright yellow trichloride. Iodine monochloride and trichloride were obtained in 1814 by Gay-Lussac by the action of chlorine on iodine. Davy also rediscovered phosphonium iodide as a sublimate of white cubic crystals by the action of iodine on phosphorus in presence of a little water, but thought they were a compound of hydriodic acid and phosphorus. The crystals were obtained by mixing hydrogen iodide and phosphine by J. J. Houton de la Billardiere (or Labillardiere) (Alen9on, 28 October 1755-Paris, 8 January 1834), professor of chemistry in Rouen. The preparation from phosphorus, iodine, and water was described by Senillas and H. Rose. Gay-Lussac discovered, but did not analyse, ethyl iodide (b.p. 64-5°) by distilling ethyl alcohol with very concentrated hydriodic acid (s.g. 1 70). 

Hempel fractionating column, 137 Hofmann s bottles 30 Hot-water funnel, 53 Hydrazobenzene, 146 Hydriodic acid, 113 Hydrobenzamide, 196 Hydrobromic acid, 140 Hydrochloric add gas, 93 Hydrocinnamic acid, 204 Hydrogen, qualitative determination, r quantitative, ... 

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