Barium bromide

Method 2 (from potassium bromide and sulphuric acid). Potassium bromide (240 g.) is dissolved in water (400 ml.) in a litre flask, and the latter is cooled in ice or in a bath of cold water. Concentrated sulphuric acid (180 ml.) is then slowly added. Care must be taken that the temperature does not rise above 75° otherwise a little bromine may be formed. The solution is cooled to room temperature and the potassium bisulphate, which has separated, is removed by flltration through a hardened Alter paper in a Buchner funnel or through a sintered glass funnel. The flltrate is distilled from a litre distilling flask, and the fraction b.p. 124 127° is collected this contains traces of sulphate. Pure constant boiling point hydrobromic acid is obtained by redistillation from a little barium bromide. The yield is about 285 g. or 85 per cent, of the theoretical. 

Baiium biomide [10333-31 -8], BaBi2, mp 854°C, density 4.781 g/mL, also exists as barium bromide dibydrate [7791-28-8], BaBr2 dehydration... 

Barium bromide is very soluble in methanol, yet almost insoluble in ethanol. Repotted uses of barium bromide include fabrication of phosphors, for example from Bap2, BaBi2 2H O and EuBy (6) as a crystallization nucleating agent to control supercooling of CaBi2 solutions (7) and in the production... 

Barium bromide (2H2O) [7791-28-8] M 333.2, m at 75" loses first H2O and at 120" loses the second H2O. Crystd from water (ImL/g) by partial evaporation in a desiccator. 

Brom-. of or combined with bromine bromo- (as Brombenzoeadure, bromobenzoic acid) bromide of (as Brombaryum, barium bromide). -ammoD, tn., ammonium, n. ammonium bromide, -antimon, n. antimony bromide, -arsen, n., -arsem k, tn. arsem c bromide. ather, tn. ethyl bromide, -athyl, n. ethyl bromide. athylen, n. ethylene bromide, athyiformin, n. Pharm.) bromalin. -atom, n. bromine atom, -baryum, n. barium bromide. beere, /. blackberry, brombeerrot, a. blackberry ed. 

L.25 Barium bromide, BaBrv, can be converted into BaCl2 by treatment with chlorine. It is found that 3.25 g of BaBrv reacts completely with an excess of chlorine to yield 2.27 g of BaCl2. Determine the value of x and write the balanced chemical equation for the production of BaCl2 from BaBr,.. 

Write formulas for each of the following compounds (a) barium bromide, (b) copper(Il) bromate, and (c) cobalt(lll) fluoride. 

Barium-bearing manganese silicon, 22 519 Barium P-alumina, 2 406t Barium bromate, 4 335 Barium bromide, 3 355... 

Major constituents (greater than 5 mg/L) Minor constituents (O.Ol-lO.Omg/L) Selected trace constituents (less than 0.1 mg/L) Bicarbonate, calcium, carbonic acid, chloride, magnesium, silicon, sodium, sulfate Boron, carbonate, fluoride, iron, nitrate, potassium, strontium Aluminum, arsenic, barium, bromide, cadmium, chromium, cobalt, copper, gold, iodide, lead, Uthium, manganese, molybdenum, nickel, phosphate, radium, selenium, silver, tin, titanium, uranium, vanadium, zinc, zirconium... 

Barium bromide is used to make photographic compounds, phosphors, and other bromides. 

Barium bromide is prepared by the reaction of barium carbonate or barium sulfide with hydrobromic acid ... 

Elemental composition Ba 46.22%, Br 53.78%. Barium maybe determined by various instrumental or wet methods (see Barium). Bromide may be analyzed by ion chromatography or titrimetry. Presence of other halide ions can interfere in titrimetry tests. 

Zinc bromide is prepared by mixing barium bromide and zinc sulfate solutions. The product barium sulfate is removed by filtration and the filtrate is evaporated to obtain crystals of zinc bromide ... 

Tetrammino-barium chloride, [Ba(NH3)4]Cl2 octammino-barium bromide, [Ba(NH3)8]Br2 liexammino-barium iodide, [Ba(NH,)6]I2. 

Chlor o - pentammino - iridium Bromide, [Ir(NH3)5Cl]Br2, is obtained by decomposing chloro-pentammino-iridium sulphate with the theoretical quantity of barium bromide. It separates in pale yellow rhombic crystals and is soluble in water. 

Chloro-pentammino-iridium Iodide, [Ir(NH3)5Cl]I2, is obtained by the same method as the bromide, substituting barium iodide for barium bromide. It crystallises in brownish-yellow rhombic prisms, and is less soluble in water than the bromide. 

The bromide, [Pt (Nil 3) 4]Br 2.11-H 20, is obtained from the sulphate on treatment with barium bromide. It crystallises in colourless prisms which are very soluble in water and lose water of hydration at 100° C. 

Dihydroxo-tetrammino-platinic Bromide, [Pt(NH3)4(OH)2]Br2, is obtained by treating the sulphate with barium bromide. It crystallises in short colourless prisms. 

The preparation oi the alkali bromides.—While V. Merz and W. Weith 2 found that metallic sodium reacts very slowly with bromine such that even after the two elements have been kept for 8 hrs. at 200°, the conversion of sodium into the bromide is but superficial potassium, caesium, and rubidium unite with bromine more quickly, forming the alkali bromide. The bromides are also formed when hydro-bromic acid is neutralized with the alkali hydroxide or carbonate, and the soln. evaporated. This method, for example, has been used for preparing rubidium bromide, RbBr. C. Chaubrie and N. N. Beketofi made a soln. of caesium bromide, CsBr, by the double decomposition of caesium sulphate, and barium bromide. P. Klein 3 made lithium bromide by digesting calcium bromide with lithium carbonate... 

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