What is potassium dimanganese oxidetetra?

Potassium oxide chemical formula K2O, molecular weight.

1] White solid, density, decomposes to K2O2 at 350.

It is easily deliquescent, soluble in water and synthesizes with water to form potassium hydroxide, which is an oxide. Prepared with potassium reduction of potassium peroxide or potassium nitrate.

2kno3+10k=6k2o+n2↑

It is produced by the oxidation or ignition of potassium metal in the air.

Potassium oxide chemical properties are lively, very soluble in water, easy to absorb water in the air, and react with water to form a strong alkali potassium hydroxide.

Potassium oxide and water reaction equation: K2O+H2O=2KOH Potassium oxide and carbon dioxide reaction equation: K2O+CO2=K2CO3 Potassium oxide and acid reaction equation:

K2O+2HCl=2KCl+H2O Potassium Oxide: Potassium nitrate, potassium sulfate, potassium dihydrogen phosphate, potassium chloride, etc. all contain a large amount of potassium oxide. Such as:

The "Rescue Dragon" and "Potassium Nitrate" produced by Biaomeilik Fertilizer Industry contain potassium oxide.

Potassium oxide is a white powder that is dissolved in water to form potassium hydroxide and emits a large amount of heat. When heated in the air stream, it can be oxidized into potassium peroxide or potassium superoxide, and it is easy to absorb carbon dioxide in the air to become potassium carbonate. Reacting with acids can produce the corresponding potassium salts.

Sodium oxide is chemically similar to potassium oxide but is not easily oxidized in air. Mainly used in the inorganic industry, it is the basic raw material for the manufacture of various potassium salts such as potassium hydroxide, potassium sulfate, potassium nitrate, potassium chlorate, potassium alum, etc.

It is used in the pharmaceutical industry as a diuretic and a drug for the prevention and treatment of potassium deficiency.

The dye industry is used in the production of g-salts, reactive dyes, etc.

In agriculture, it is a potash fertilizer. Its fertilizer effect is fast, and it is directly applied to farmland, which can make the moisture of the lower layer of soil rise, and has the effect of drought resistance. However, it should not be applied in saline-alkali land and on tobacco, sweet potato, sugar beet and other crops.

In addition, it is used in the manufacture of flame suppressants for muzzles or muzzles, heat treatment agents for steel, and for photography.

Potassium oxide is a basic oxide.

Potassium oxide can be prepared by controlling oxidation with potassium metal. First of all, to remove the non-volatile oil substances on the surface of potassium metal, for which the potassium metal must be repeatedly melted in xylene several times, and then placed in a rigid glass tube with a pump distillation twice to remove the gas, the surface of the potassium metal treated in this way is smooth.

It is filtered through a capillary tube in a high vacuum into a vessel made of high-silicon glass, heated slightly, and introduced into dry pure air in a small amount, and several times to form particulate potassium oxide. The unreacted potassium metal melts due to the heat of reaction and is adsorbed on the spongy surface of the potassium oxide, forming an aggregate with a metallic luster, which avoids the formation of potassium peroxide. Finally, the excess metallic potassium is removed by vacuum distillation at 35°C, and the remaining potassium oxide in the vessel is of purity.

Main uses of potassium oxide:

K2O is an alkali metal oxide, which is the main flux in porcelain billets and is introduced by feldspar. It can dissolve part of SiO2 (silicon dioxide) and Al2O3 (aluminum oxide), form a glass phase, fill in the void of the carcass skeleton, and can accelerate the growth of mullite, improve mechanical strength, promote carcass sintering, and improve the transparency of porcelain", potassium oxide "can reduce the expansion coefficient of the glaze, increase the elasticity of the glaze, and is beneficial to thermal stability.

The water dissolution resistance of the glaze with the addition of potassium oxide is also higher than that of sodium oxide. It is mainly used in the inorganic base distribution industry, and is the basic raw material for the manufacture of various potassium salts such as potassium hydroxide, potassium sulfate, potassium nitrate, potassium chlorate, potassium alum, etc.; It is used in the pharmaceutical industry as a diuretic and a drug for the prevention and treatment of potassium deficiency. The dye industry is used in the production of g-salts, reactive dyes, etc. used in the daily chemical industry to make process soap; The battery industry is used to manufacture electrolytes for alkaline battery sales; In addition, it is used in the manufacture of flame suppressants for muzzles or muzzles, heat treatment agents for steel, and for photography.

2kClO3=(mNO2)=2kCl+3O2 (here manganese dioxide does not participate in the reaction, only a catalyst).

There are many ways to prepare oxygen in the laboratory, among which there are potassium permanganate oxygen production and hydrogen peroxide (hydrogen peroxide) oxygen production.

2H2O2--- MNO2---2H2O+O2 (hydrogen peroxide (hydrogen peroxide) oxygen production).

2kmNO4---K2mNO4 + MMO2 + O2 (potassium permanganate oxygen production).

Oxygen separation device for making potassium permanganate or potassium chlorate: solid and solid heating to make gas (commonly used in the laboratory: solid heating type).

Hydrogen peroxide to oxygen B separation device: liquid and solid gas production without heating (commonly used in the laboratory: solid-liquid room temperature type).

Oxygen formula. potassium manganese chlorate dioxide; Mix evenly and add heat.

Oxygen concentrators have characteristics; The bottom is high and the mouth is low and slightly sloping.

There are three main methods of producing oxygen in the laboratory, and their literal expressions are as follows:

Heat potassium permanganate --- potassium manganate + manganese dioxide + oxygen.

Manganese dioxide. Potassium chlorate--- potassium chloride + oxygen (manganese dioxide as catalyst).

Heating hydrogen peroxide + manganese dioxide - water + oxygen (manganese dioxide as catalyst).

Some people don't think so, because some experiments have pointed out that the reaction of the substance is purple-red after dissolving in Shuixinhui, and the oxygen produced has the smell of chlorine, so it is possible that manganese dioxide participated in the reaction. When using manganese dioxide as a catalyst, it is also believed that in the reaction process, manganese dioxide first participates in the reaction to generate the intermediate product manganese heptaoxide (Mn2O7), and then decomposes into manganese dioxide and oxygen.

Here's their explanation: 2kclo3 2mno2=2kmno4 cl2 o2

2kmNO4=K2MNO4 MNO2 O2 K2Mno4 Cl2=2KCl MNO2 O2 Sometimes the resulting potassium chloride has a purplish-red color, indicating the presence of mno4- during the reaction.

"White mist" is the cause of the slippage of potassium chloride formed by the thermal decomposition of potassium chlorate as particulates dispersed in oxygen.

However, some literature Bihao believes that the reaction mechanism of thermal decomposition of potassium chlorate is:

2kclo3＋4mno2=2kcl＋2mn2o72mn2o7=

4mno2 3o2 In this view, there is no proper explanation as to why the smell of chlorine is present.

Supplementing upstairs, there is also a point of view.

Second, imitation manganese oxide first reacts with potassium chlorate to form potassium permanganate, chlorine and oxygen, 2mNO2 + 2KCLO3 = 2kmNO4 + Cl2 + O2

Potassium permanganate is redecomposed to produce potassium manganate, manganese dioxide and oxygen, 2kmNO4=K2MNO4+MNO2+O2

Potassium manganate reacts with chlorine to form potassium chloride, manganese oxide and oxygen in the second foci.

K2mNO4+Cl2=2KCl+Mno2+O2 add up.

2kClO3 = 2kCl + 3O2 (MnO2 catalysis) In short, Mno2 is involved in the reaction and is regenerated after the reaction.

The mixture of potassium chloride and manganese dioxide can be separated by the sequence of dissolution, filtration, washing, and evaporation crystallization.

Potassium chloride is a chemical compound. It is a grayish-black cubic crystal. Soluble in water.

Potassium chlorocytec or acacia decomposes under the catalysis of manganese dioxide in the cavity to produce oxygen and potassium chloride, so the final solid is a mixture of potassium chloride and manganese dioxide, and the oxygen is generated, and the potassium chloride has xg

2kclo3=2kcl+3o2

.x...So x=2*

Then the mass of mno2 is .

Potassium manganate: K2MNO4 is dark green or gray-black orthorhombic crystal, decomposes at 190, and its aqueous solution is dark green or dark green. It is mainly used for bleaching greases, fibers, and leather, as well as disinfection, photographic materials, and oxidants.

Manganese dioxide: MNO2 black amorphous powder, or black orthorhombic crystal, solubility: insoluble in water, weak acid, weak alkali, nitric acid, cold sulfuric acid, soluble in hot concentrated hydrochloric acid to produce chlorine.

It is used as a depolarizing agent for dry batteries, a catalyst and oxidizer in the synthesis industry, a colorant, a decolorizer and a deironing agent in the glass industry and the enamel industry. It is used in the manufacture of manganese metal, special alloys, ferromanganese castings, gas masks and electronic materials ferrite. In addition, it can also be used in the rubber industry to increase the viscosity of rubber.

It can also be used as a catalyst in chemical experiments.

Let's start by giving you some of their applications, chemical formulas, and properties.

Potassium manganate is K2mNO4

1. In life, hand injuries and bleeding can be cleaned with dilute concentration potassium permanganate water, which can stop bleeding quickly, disinfect, and prevent infection 2.

3. Toilet deodorization.

The appearance of pure K2MNO4 is very similar to that of potassium permanganese, with purple-brown crystals. In 190 decomposed. Soluble in water into a green solution.

It is easy to decompose in acidic solutions and stable in alkaline solutions. There is an oxidizing effect. It is mainly used for the preparation of potassium permanganate, refined oil, and used as oxidant, disinfectant, mordant, etc.

It is prepared by the reaction of molten potassium hydroxide or potassium carbonate with manganese dioxide.

Manganese dioxide is MnO2

There are not many applications in life.

Properties: Black orthorhombic crystal. Density.

535 Decomposition. Insoluble in water, nitric acid and cold sulfuric acid. It dissolves in cold hydrochloric acid and produces chlorine gas.

Strong oxidizing agent that cannot be heated or rubbed with organic matter or other reducing agents. It mainly takes white natural mineral pyromanganese. It is generally prepared by electrolysis of high-temperature manganese sulfate solution, and manganese carbonate and soft manganese ore can be used as raw materials.

The preparation of manganese sulfate solution includes leaching, iron removal, neutralization, heavy metal removal, filtration, static calcium and magnesium removal, etc., crude products are prepared after high-temperature electrolysis, and then qualified crystals are prepared by processing including stripping, crushing, washing, neutralization and drying. When electrolysis of manganese chloride solution is used, fibrous manganese dioxide can be prepared. There is also manganese carbonate and manganese nitrate pyrolysis method, which is prepared by direct oxidation by combining low-valent manganese oxide with oxidants such as sodium chlorate, chlorine, oxygen, etc.

It is mainly used as a depolarizing agent for dry batteries, and is suitable for intermittent discharge of light load; used as a decolorizing agent in the glass industry; Manganese-zinc ferrite materials (manganese-ferroalloy for steelmaking) are used as oxidants, catalysts for organic synthesis, desiccant for paints and inks, absorbents for gas masks, accelerants for matches, glazes for ceramics and enamels, and water purification and iron removal. There are various types of activated manganese dioxide crystals. Using natural manganese dioxide rich minerals as raw materials, the original manganese dioxide can change the crystal form, expand the lattice voids, increase the porosity and specific surface area, and improve the electrochemical performance after simple chemical treatment.

Usually hot dilute sulfuric acid (or nitric acid) is used to directly treat natural manganese dioxide ore powder for activation, or natural manganese dioxide ore powder is first reductively roasted to produce manganese trioxide, and then disproportionated with sulfuric acid (or nitric acid) to convert into activated manganese dioxide. It is mainly used for the raw material treatment of batteries, and can be used appropriately with natural manganese dioxide to obtain excellent discharge performance.

Potassium manganate is a salt, which is a dark green crystal composed of manganese and potassium ions, but it is not easy to decompose when heated. Manganese dioxide is a black solid and is found in batteries. Potassium manganate is not sold at all, and can be prepared from the redox of potassium permanganate under alkaline conditions.

In hot acids, both of these substances are strong oxidants.