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Manganese(II) nitrate refers to the inorganic compounds with formula Mn(NO 3) 2 ·(H 2 O) n.These compounds are nitrate salts containing varying amounts of water. A common derivative is the tetrahydrate, Mn(NO 3) 2 ·4H 2 O, but mono- and hexahydrates are also known as well as the anhydrous compound.
Potassium permanganate will decompose into potassium manganate, manganese dioxide and oxygen gas: 2 KMnO 4 → K 2 MnO 4 + MnO 2 + O 2. This reaction is a laboratory method to prepare oxygen, but produces samples of potassium manganate contaminated with MnO 2. The former is soluble and the latter is not.
The chemical chameleon reaction shows the process in reverse, by reducing violet potassium permanganate first to green potassium manganate and eventually to brown manganese dioxide: [1] [2] [5] KMnO 4 (violet) → K 2 MnO 4 (green) → MnO 2 (brown/yellow suspension) Blue potassium hypomanganate may also form as an intermediate. [6]
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.
Manganese(II) acetate are chemical compounds with the formula Mn(CH 3 CO 2) 2 ·(H 2 O)n where n = 0, 2, 4. These materials are white or pale pink solids. These materials are white or pale pink solids.
Manganese nitrides are salts of manganese and the nitride ion. Four of these compounds are stable at atmospheric pressure . The most important is Mn 3 N 2 , which catalyzes nitrogen fixation and is a high-temperature antiferromagnet .
Manganese(VII) oxide (manganese heptoxide) is an inorganic compound with the formula Mn 2 O 7. Manganese heptoxide is a volatile liquid with an oily consistency. It is a highly reactive and powerful oxidizer that reacts explosively with nearly any organic compound. It was first described in 1860. [1] It is the acid anhydride of permanganic acid.
In inorganic nomenclature, a manganate is any negatively charged molecular entity with manganese as the central atom. [1] However, the name is usually used to refer to the tetraoxidomanganate(2−) anion, MnO 2− 4, also known as manganate(VI) because it contains manganese in the +6 oxidation state. [1] Manganates are the only known manganese ...