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The hydrates dissolve in water to give mildly acidic solutions with a pH of around 4. These solutions consist of the metal aquo complex [Mn(H 2 O) 6] 2+. It is a weak Lewis acid, reacting with chloride ions to produce a series of salts containing the following ions [MnCl 3] −, [MnCl 4] 2−, and [MnCl 6] 4−.
Molar mass: 173.027 g/mol (anhydrous) 245.087 g/mol (tetrahydrate) ... soluble in water (about 700g/L at 20°C for tetrahydrate), methanol, acetic acid (anhydrous)
The molar mass of atoms of an element is given by the relative atomic mass of the element multiplied by the molar mass constant, M u ≈ 1.000 000 × 10 −3 kg/mol ≈ 1 g/mol. For normal samples from Earth with typical isotope composition, the atomic weight can be approximated by the standard atomic weight [ 2 ] or the conventional atomic weight.
Manganese(II) chlorate was produced by the reaction of manganese(II) sulfate and barium chlorate. [3] The water was removed by boiling in vacuum. Then the temperature was lowered to -80°C which resulted in a pink solid. Then it was cleaned with liquid nitrogen and potassium hydroxide to remove the decomposition products. [2]
The reaction of manganese dioxide with hydrochloric acid in tetrahydrofuran gives MnCl 3 (H 2 O)(THF) 2. [4] Manganese(III) fluoride suspended in THF reacts with boron trichloride, giving MnCl 3 (THF) 3 which has the appearance of dark purple prisms. [4] This compound has a monoclinic crystal structure, reacts with water, and decomposes at room ...
In some contexts, water of crystallization is the total mass of water in a substance at a given temperature and is mostly present in a definite (stoichiometric) ratio. Classically, "water of crystallization" refers to water that is found in the crystalline framework of a metal complex or a salt, which is not directly bonded to the metal cation.
Molar mass: 142.956 g·mol −1 ... Exchange reaction between sodium oxalate and manganese chloride: ... Z = 4, melts in its own crystallization water at 100°C. ...
Mn 3 O 4 has been found to act as a catalyst for a range of reactions e.g. the oxidation of methane and carbon monoxide; [7] [8] the decomposition of NO, [9] the reduction of nitrobenzene [10] and the catalytic combustion of organic compounds. [11]