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Magnesium chloride is an inorganic compound with the formula Mg Cl 2.It forms hydrates MgCl 2 ·nH 2 O, where n can range from 1 to 12. These salts are colorless or white solids that are highly soluble in water.
The yellowish dihydrate, NiCl 2 ·2H 2 O, is produced by heating the hexahydrate between 66 and 133 °C. [6] The hydrates convert to the anhydrous form upon heating in thionyl chloride or by heating under a stream of HCl gas. Simply heating the hydrates does not afford the anhydrous dichloride. NiCl 2 ·6H 2 O + 6 SOCl 2 → NiCl 2 + 6SO 2 + 12HCl
The solid dihydrate and hexahydrate can be obtained by evaporation. Cooling saturated aqueous solutions yields the dihydrate between 120.2 °C and 51.25 °C, and the hexahydrate below 51.25 °C. Water ice, rather than cobalt chloride, will crystallize from solutions with concentration below 29%.
VCl 3 dissolves in water to give the aquo complexes. From these solutions, the hexahydrate [VCl 2 (H 2 O) 4]Cl. 2H 2 O crystallizes. In other words, two of the water molecules are not bound to the vanadium, whose structure resembles the corresponding Fe(III) derivative. Removal of the two bound chloride ligands gives the green hexaaquo complex ...
Since magnesium nitrate has a high affinity for water, heating the hexahydrate does not result in the dehydration of the salt, but rather its decomposition into magnesium oxide, oxygen, and nitrogen oxides: 2 Mg(NO 3) 2 → 2 MgO + 4 NO 2 + O 2. The absorption of these nitrogen oxides in water is one possible route to synthesize nitric acid.
A brown, acidic solution of iron(III) chloride. Like the solid hydrates, aqueous solutions of ferric chloride also consist of the octahedral [FeCl 2 (H 2 O) 4] + of unspecified stereochemistry. [9] Detailed speciation of aqueous solutions of ferric chloride is challenging because the individual components do not have distinctive spectroscopic ...
Dysprosium(III) chloride (DyCl 3), also known as dysprosium trichloride, is a compound of dysprosium and chlorine.It is a white to yellow solid which rapidly absorbs water on exposure to moist air to form a hexahydrate, DyCl 3 ·6H 2 O. Simple rapid heating of the hydrate causes partial hydrolysis [2] to an oxychloride, DyOCl.
The anhydrous sulfate is produced by heating the hydrates above 330 °C. X-ray crystallography measurements show that NiSO 4 ·6H 2 O consists of the octahedral [Ni(H 2 O) 6] 2+ ions. These ions in turn are hydrogen bonded to sulfate ions. [5] Dissolution of the salt in water gives solutions containing the aquo complex [Ni(H 2 O) 6] 2+.