Chemistry : general, medical, and pharmaceutical including the chemistry of the ; a manual on the general principles of the science, and their applications in medicine and pharmacy . inistered in cases of poisoningby hydrochloric acid ? HYDROBROMIC ACID AND OTHER BROMIDES. Formula of Hydrobromic Acid HBr. Molecular weight 81. Bromine. Source, Preparation, and Properties.—The acidulousradical of hydrobromic acid and other bromides is the element bro-mine, Br (Bromnm, B. P., Brominium, U. S. P.). It occurs innature chiefly as bromide of magnesium (MgBr2) in sea water andcertain
Chemistry : general, medical, and pharmaceutical including the chemistry of the ; a manual on the general principles of the science, and their applications in medicine and pharmacy . inistered in cases of poisoningby hydrochloric acid ? HYDROBROMIC ACID AND OTHER BROMIDES. Formula of Hydrobromic Acid HBr. Molecular weight 81. Bromine. Source, Preparation, and Properties.—The acidulousradical of hydrobromic acid and other bromides is the element bro-mine, Br (Bromnm, B. P., Brominium, U. S. P.). It occurs innature chiefly as bromide of magnesium (MgBr2) in sea water andcertain saline springs, and is commonly prepared from the bittern, orresidual liquors of salt-works. It may be liberated from its com-pounds by the process for chlorine from chlorides—that is, by heat-ing with black oxide of manganese and sulphuric acid (see previouspage). It is a dark-red volatile liquid, emitting an odor more irri-tating, if possible, than chlorine—of specific gravity , boiling-point ° F. Quantivalence.—The atom of bromine, like that of chlorine, isunivalent (Br). The atomic weight of bromine is 80. Free bro-mine has the molecular formula Br2, bromide of Preparation of Hydrobromic Acid. Hydrobromic Acid.—The bromide of hydrogen, hydrobromic acid,may be made by decomposing bromide of phosphorus by water—PBr5 + 4H20 = 5HBr + H3P04. A small quantity may be pre-pared by placing seven or eight drops of bromine at the bottom of atest-tube, putting in fragments of glass to the height of about an inchor two, then ten or eleven grains of phosphorus, then another inch ofglass, and finally a couple of inches of glass fragments slightly wetted BROMIDES. 2T1 with water, a delivery-tube being fitted on by a cork. The phos-phorus combines readily, almost violently, with the bromine as soonas the vapor of the latter, aided by a little warmth from a flame,rises to the region of the phosphorus. The bromide of phosphorusthus formed then suffers decompos
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