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Anhydrous MgCl 2 is produced industrially by heating the complex salt named hexamminemagnesium dichloride [Mg(NH 3) 6] 2+ (Cl −) 2. [2] The thermal dehydration of the hydrates MgCl 2 ·nH 2 O (n = 6, 12) does not occur straightforwardly. [8] As suggested by the existence of hydrates, anhydrous MgCl 2 is a Lewis acid, although a weak one.
Carnallite's chemical formula is K Mg Cl 3 ·6(H 2 O). Synthetic carnallite crystal specimens can be produced from 1.5 mole percent KCl and 98.5 mole percent MgCl 2 ·6H 2 O by slow crystallization at 25 °C. [8] Its density is 1.602 g/cm 3. [8] Carnallite can also be produced by grinding the combination of hydrated magnesium chloride and ...
In chemistry, the molar mass (M) (sometimes called molecular weight or formula weight, but see related quantities for usage) of a chemical compound is defined as the ratio between the mass and the amount of substance (measured in moles) of any sample of the compound. [1] The molar mass is a bulk, not molecular, property of a substance.
The terms "molecular mass", "molecular weight", and "molar mass" may be used interchangeably in less formal contexts where unit- and quantity-correctness is not needed. The molecular mass is more commonly used when referring to the mass of a single or specific well-defined molecule and less commonly than molecular weight when referring to a ...
Phosphotungstic acid (PTA) or tungstophosphoric acid (TPA), is a heteropoly acid with the chemical formula H 3 P W 12 O 40].It forms hydrates H 3 [PW 12 O 40]·nH 2 O.It is normally isolated as the n = 24 hydrate but can be desiccated to the hexahydrate (n = 6). [2]
Triphenylphosphine forms a labile 2:1 adduct: MnCl 2 + 2 Ph 3 P → [MnCl 2 (Ph 3 P) 2] Anhydrous manganese(II) chloride serves as a starting point for the synthesis of a variety of organomanganese compounds. For example, manganocene is prepared by reaction of MnCl 2 with a solution of sodium cyclopentadienide in tetrahydrofuran (THF).
For gases, departure from 3 R per mole of atoms is generally due to two factors: (1) failure of the higher quantum-energy-spaced vibration modes in gas molecules to be excited at room temperature, and (2) loss of potential energy degree of freedom for small gas molecules, simply because most of their atoms are not bonded maximally in space to ...
The hexahydrate Mg(ClO 3) 2 ·6H 2 O decomposes to the tetrahydrate at 35 °C. At 65 °C, it dehydrates to the dihydrate, then at 80 °C forms a basic salt. If further heated to 120 °C it decomposes to water, oxygen, chlorine, and magnesium oxide. [2] As confirmed by X-ray crystallography, the di- and hexahydrates feature octahedral Mg 2 ...