Atomistry » Copper » Cupric Compounds » Cupric bromide
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Cupric bromide, CuBr2

The anhydrous Cupric bromide, CuBr2, is obtained by evaporating at low temperature a solution of cupric oxide or carbonate in hydrobromic acid. It forms deliquescent crystals, similar in appearance to those of iodine. At red heat it is converted into cuprous bromide and bromine. Its heat of formation from its elements is 32.58 Cal. A basic bromide, CuBr2,3Cu(OH)2, is known, and also a number of double salts with other metallic bromides. These double salts are exemplified by the black 2LiBr,CuBr2,6H2O; KBr,CuBr2, lustrous, dark-coloured prisms; and the green 2NH4Br,CuBr2,2H2O. Nitric oxide dissolves in an alcoholic solution of cupric bromide, forming a double compound of the formula CuBr2,NO.
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