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Reactions of barium hydroxide with ammonium salts are strongly endothermic. The reaction of barium hydroxide octahydrate with ammonium chloride [18] [19] or [20] ammonium thiocyanate [20] [21] is often used as a classroom chemistry demonstration, producing temperatures cold enough to freeze water and enough water to dissolve the resulting mixture.
A solution of 5% by mass of ammonium chloride in water has a pH in the range 4.6 to 6.0. [12] Some reactions of ammonium chloride with other chemicals are endothermic, such as its reaction with barium hydroxide and its dissolving in water.
Molar mass: 208.23 g/mol (anhydrous) ... Barium chloride is an inorganic ... Barium chloride can in principle be prepared by the reaction between barium hydroxide or ...
Substance Formula 0 °C 10 °C 20 °C 30 °C 40 °C 50 °C 60 °C 70 °C 80 °C 90 °C 100 °C Barium acetate: Ba(C 2 H 3 O 2) 2: 58.8: 62: 72: 75: 78.5: 77: 75
ammonium nitrate +25.69 ammonia-30.50 potassium hydroxide-57.61 caesium hydroxide-71.55 sodium chloride +3.87 potassium chlorate +41.38 acetic acid-1.51 sodium hydroxide-44.50 Change in enthalpy ΔH o in kJ/mol in water at 25°C [2]
For large-scale manufacturing purposes, barium perchlorate is synthesized by evaporating a solution of sodium perchlorate and barium chloride. [3] Another method of preparation involves the digestion of a saturated solution of ammonium perchlorate with hydrated barium hydroxide in 5-10% excess of the theoretical amount. [5]
Molar mass: 99.45 g·mol −1 ... such as ammonium hydroxide or sodium hydroxide. Ammonium perchlorate, ... which collectively take perchlorate to chloride. [28] ...
Robert Bunsen and Augustus Matthiessen obtained pure barium by electrolysis of a molten mixture of barium chloride and ammonium chloride. [ 19 ] [ 20 ] The production of pure oxygen in the Brin process was a large-scale application of barium peroxide in the 1880s, before it was replaced by electrolysis and fractional distillation of liquefied ...