Definition of MnO2. Meaning of MnO2. Synonyms of MnO2

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Definition of MnO2

MnO2
Manganese Man`ga*nese", n. [F. mangan[`e]se, It. manganese, sasso magnesio; prob. corrupted from L. magnes, because of its resemblance to the magnet. See Magnet, and cf. Magnesia.] (Chem.) An element obtained by reduction of its oxide, as a hard, grayish white metal, fusible with difficulty, but easily oxidized. Its ores occur abundantly in nature as the minerals pyrolusite, manganite, etc. Symbol Mn. Atomic weight 54.8. Note: An alloy of manganese with iron (called ferromanganese) is used to increase the density and hardness of steel. Black oxide of manganese, Manganese dioxide or peroxide, or Black manganese (Chem.), a heavy black powder MnO2, occurring native as the mineral pyrolusite, and valuable as a strong oxidizer; -- called also familiarly manganese. It colors glass violet, and is used as a decolorizer to remove the green tint of impure glass. Manganese bronze, an alloy made by adding from one to two per cent of manganese to the copper and zinc used in brass.

Meaning of MnO2 from wikipedia

- two electrodes. The MnO2 dissolves, enters solution as the sulfate, and is deposited on the anode. The important reactions of MnO 2 are ****ociated with...
- MnO− 4 + e− → MnO2− 4 In a neutral solution, however, it gets reduced to the brown manganese dioxide MnO2 with an oxidation state of +4. 2 H2O + MnO−...
- hydroxides containing Mn (III,IV), such as MnOOH and MnO2. Soil pH and oxidation-reduction conditions affect which of these three forms of Mn is dominant in...
- permanganate decomposes when heated: 2KMnO4⟶K2MnO4+MnO2+O2{\displaystyle {\ce {2 KMnO4 -> K2MnO4 + MnO2 + O2}}} It is a redox reaction. Pot****ium permanganate...
- (1981-09-01). "Preparation of a new crystal form of manganese dioxide: λ-MnO2". Journal of Solid State Chemistry. 39 (2): 142–147. Bibcode:1981JSSCh..39...
- electron on the Mn(VI) center. The industrial route entails treatment of MnO2 with air and pot****ium hydroxide: 2 MnO2 + 4 KOH + O2 → 2 K2MnO4 + 2 H2O...
- acceptors, as illustrated by the conversion of MnO− 4 to MnO2− 4,ie permanganate to manganate. Oxygen (O2) Ozone (O3) Hydrogen peroxide (H2O2) and other...
- from the electrochemical reaction between zinc (Zn) and manganese dioxide (MnO2) in the presence of an ammonium chloride (NH4Cl) electrolyte. It produces...
- dielectric of the capacitor was repaired after each dip-and-convert cycle of MnO2 deposition, which dramatically reduced the leakage current of the finished...
- preparing oxygen in the laboratory: NaOCl + H2O2 → O2 + NaCl + H2O 2 KMnO4 + 3 H2O2 → 2 MnO2 + 2 KOH + 2 H2O + 3 O2 The oxygen produced from hydrogen peroxide...