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A permanganate can oxidize an amine to a nitro compound, [7] [8] an alcohol to a ketone, [9] an aldehyde to a carboxylic acid, [10] [11] a terminal alkene to a carboxylic acid, [12] oxalic acid to carbon dioxide, [13] and an alkene to a diol. [14] This list is not exhaustive. In alkene oxidations one intermediate is a cyclic Mn(V) species: [15]
It is a purplish-black crystalline salt, which dissolves in water as K + and MnO − 4 ions to give an intensely pink to purple solution. Potassium permanganate is widely used in the chemical industry and laboratories as a strong oxidizing agent , and also as a medication for dermatitis , for cleaning wounds , and general disinfection .
which shows that KMnO 4 (in an acidic medium) is a very strong oxidizing agent, able to oxidize Fe 2+ (E° Fe 3+ /Fe 2+ = +0.77 V), Sn 2+ (E° Sn 4+ /Sn 2+ = +0.2 V), and even Cl − (E° Cl 2 /Cl − = +1.36 V). In weak acidic medium MnO − 4 can not accept 5 electrons to form Mn 2+. Instead, it accepts only 3 electrons and forms solid MnO 2 ...
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.
The industrial route entails treatment of MnO 2 with air and potassium hydroxide: [1]. 2 MnO 2 + 4 KOH + O 2 → 2 K 2 MnO 4 + 2 H 2 O. The transformation gives a green-colored melt. Alternatively, instead of using air, potassium nitrate can be used as the oxid
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Sodium permanganate is the inorganic compound with the formula Na MnO 4.It is closely related to the more commonly encountered potassium permanganate, but it is generally less desirable, because it is more expensive to produce.
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