XV.—Ammonium bromide and the atomic weight of nitrogen

Alexander Scott
1901 Journal of the Chemical Society Transactions  
ALTHOUGH the whole of the recent work on the ratio of the atomic weights of hydrogen and oxygen relatively to one another seems to establish that ratio as 1 : 15.88 or 1.0075 : 16, 1 thought it would be not only of great interest, but of the highest importance if this ratio noncer. Bn effet, & une tempdrature trh-peu supdrieure A sa volatilisation, il se dissocie, du brome mbme devient parfois libre. On constate aisbment la presence de ce corps par la coloration de la vapeur du bromure, et par
more » ... du bromure, et par la colorcction enjaune du sel condens:, qui a produit des fumbes lorsqu'on l'a chauffe dans de l'ammoniaque seche." H e further remarks that his bromide, which was brilliantly white and remained so indefinitely at the ordinary temperature under a bell jar over potash, lost its whiteness and became greyish (gi*isdtre) when heated in air at temperatures above looo, that this greyness increased as the salt was heated from 115' to 180" and that the whiteness was only partially restored by heating it in a current of ammonia. The italics are those of Stas himself.
doi:10.1039/ct9017900147 fatcat:jmrxburhm5cd5dzuz4iewe6wpa