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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.
The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.
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]
Ammonium chloride is an inorganic chemical compound with the chemical formula N H 4 Cl, also written as [NH 4]Cl. It is an ammonium salt of hydrogen chloride . It consists of ammonium cations [NH 4 ] + and chloride anions Cl − .
A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and chemical formulas.The reactant entities are given on the left-hand side and the product entities are on the right-hand side with a plus sign between the entities in both the reactants and the products, and an arrow that points towards the products to show the direction of the reaction. [1]
For example, the precipitation of silver chloride from a mixture of silver nitrate and cobalt hexammine chloride delivers the nitrate salt of the cobalt complex: 3 AgNO 3 + [Co(NH 3) 6]Cl 3 → 3 AgCl + [Co(NH 3) 6](NO 3) 3. The reactants need not be highly soluble for metathesis reactions to take place.
Ammonia (ammonium hydroxide) Aqueous NH 3 (NH 4 OH) −80.8 Ammonia: Gas NH 3: −46.1 Ammonium nitrate: Solid NH 4 NO 3: −365.6 Ammonium chloride: Solid NH 4 Cl −314.55 Nitrogen dioxide: Gas NO 2: 33.2 Hydrazine: Gas N 2 H 4: 95.4 Hydrazine: Liquid N 2 H 4: 50.6 Nitrous oxide: Gas N 2 O 82.05 Nitric oxide: Gas NO 90.29 Dinitrogen tetroxide ...
Chemical formula ΔG f ° (kJ/mol) Aluminum: Aluminum: Solid Al 0 Aluminum chloride: Solid AlCl 3: −628.9 Aluminum oxide: Solid Al 2 O 3: −1582.3 Barium: Barium: Solid Ba 0 Barium chloride: Solid BaCl 2: −806.7 Barium carbonate: Solid BaCO 3: −1134.4 Barium oxide: Solid BaO −520.4 Barium sulfate: Solid BaSO 4: −1362.2 Beryllium ...