What is potassium superoxide chemical formula is KO2 or not

Potassium superoxide is a primary oxidant, which can cause combustion and even ** in case of flammables, organic matter, reducing agents, etc. The same can happen when it encounters water or water vapor that generates a lot of heat**! Potassium superoxide is a calcium carbide type powdered crystal. It is hygroscopic and paramagnetic.

Chemical properties] KO2 reacts with water and dilute acid to form KOH, H2O2 and oxygen.

Ko2 is pyrolytically decomposed into K2O2 and oxygen.

KO2 is produced by burning potassium in strictly dry oxygen.

Uses] can be used as an oxygen source for breathing masks.

It can be used as an oxygen regenerator for closed systems such as spaceships and submarines.

Conventional】 Molecular formula KO2 Strictly speaking, it should be: K2O4 molecular weight G·mol-1

Physical Properties】Melting point 380 (decomposes at 150) Solid Appearance Orange-yellow crystal.

Density kg·m-3

Safety] Main hazards In case of flammables, organic matter, reducing agents, etc., which can cause combustion** A large amount of heat is generated in case of water or water vapor, which may occur.

Industrial Law]:

The preparation of potassium superoxide is in the stainless steel replacement kettle, replacing potassium chloride with sodium metal to obtain potassium metal with a purity greater than 97, and the molten potassium is pressed to a special spray gun mixed with purified air and then sprayed into the oxidation furnace, and burned at 230 250 to produce potassium superoxide.

KO2 reacts with water and dilute acid to form KOH, H2O2, and oxygen.

Dizzy. LS table doesn't know how to pretend to understand.

Summary: O(2-)Negative divalent oxygen is composed of general oxides, such as K2O potassium oxide.

K2O2 potassium peroxide.

KO2 potassium superoxide.

KO3 potassium oozoxide.

The above k is always +1 price. Oxygen is an ion: O2(2-) peroxide, O2(-) superoxide, O3(-) ozone (the average oxidation number of O element is -1, -1 2, -1 3).

Similarly, there are Na2O2 sodium peroxide, RBO2 rubidium superoxide, etc., which are not special readings.

However, the valence of FeO, Fe3O4, Fe2O3, and Fe is not the same, so it has to be subdivided, and it cannot be called iron oxide. ”

Iron oxide is generally referred to as ferric oxide, because the Fe element is +3 valence. Feo is ferrous oxide. Fe3O4=FeO·Fe2O3, commonly known as ferric tetroxide.

5, KO2 is called potassium superoxide ......Potassium oxide is K2O. Because K is generally positive 1 valence, O is generally negative 2 valence, and there is no valence, so the compound composed of K and O is generally K2O, which can be called potassium oxide. But for example, FeO, Fe3O4, Fe2O3, the valency of Fe is different, so it has to be subdivided, and those that cannot be generalized are called iron oxide.

2, potassium oxide is k2o I don't know if you wrote it wrong?? You have to read it according to the valency.

Potassium oxide is monovalent, and oxygen is very common-2valent.

Potassium superoxide is still +1, but oxygen is very oxidizing -1 valence, and it can easily become a -2 valence stable state.

Also, potassium superoxide is a bright type K2O2, and you seem to have written 2 in the wrong place......, 1, ko2 is called potassium superoxide.

The reason is that the O2 inside is a -1 valence ion, which is different from the general Ro2.

Similarly, there is Na2O2, which is called sodium peroxide, where O2 is a -2 valence ion.

RBO3, rubidium ozonoxide, contains an O3 ion, which is -1 valence. Unlike RO3. ,0,Called potassium superoxide H2O2 Hydrogen peroxide,0,ko2Why is it called potassium oxide and not potassium dioxide?

Is there anything special about this reading? There are examples

Because o is -2 valence.

O(2-)Negative divalent oxygen is composed of general oxides, such as potassium oxide.

k o potassium peroxide.

KO potassium superoxide.

KO potassium ozonoxide.

The above k is always +1 price. Oxygen is an ion: o (2-) peroxide, o (-superoxide, o (-ozone) (-o, -o, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -, -1, -, -1, -, -1, -, -1, -, -1, -, -1, -1

Similarly, there are Na O sodium peroxide, RBO rubidium superoxide, etc.

Hello lz.

In the reaction, the O2 of KO2 should be treated as [OO]-, where one of the 0 valence, a partial disproportionation of -1-1 valence, may become -2 valence present in Koh, or may become part of O2 At the same time, Ko2, Koh has the same N, H2O coefficient is N2, so 2KO2 + H2O = 2KOH + PO2 In this reaction, there are 2 0-valent O, 2 -1 valence O disproportionations (one of which becomes part of O2), and inherently 3 O's become O2

So p=3 2

After that, the coefficient of both sides is multiplied by 2, and the work is done.

n（ko2=

71g/mol

1) Let the volume of oxygen generated be x,4ko2

2h2o=4koh+3o2

4molx4mol：：x

x=, A: The volume of oxygen produced is;

2) According to the conservation of atoms, n(ko2

n(k+=, then the number of potassium ions=

mol = A: The number of potassium ions is.

3) In the process of reaction, the conservation of atoms should be followed, according to the conservation of atoms, the number of potassium ions remains unchanged, so the number of potassium ions is.

Answer: The number of potassium ions is.

(1) Marble (the main component is CaCO3) and dilute hydrochloric acid (the main component HCl) for carbon dioxide are prepared in the laboratory, and the two can react to produce calcium chloride, water and carbon dioxide when they are in contact The chemical equation is: CaCO3+2HCl, CaCl2+H2O+CO2; Because the reaction condition of laboratory-made carbon dioxide is that it does not need to be heated, the generating device can choose Figure 2 and Figure 3, and because the lower end of the long-neck funnel in Figure 3 does not extend below the liquid surface, the generated carbon dioxide gas will run out of the long-neck funnel, so the generating device can choose Figure 2; From the meaning of the title, it can be seen that the reaction that occurs in D is: 4KO2+2CO2=2K2CO3+3O2, and it can be seen that E collects oxygen, and the test method of oxygen is to use its flammability; So the answer is:

Fig.2 CaCO3+2HCl=CaCl2+CO2 +H2O When a wooden strip with sparks extends into the gas collector cylinder, the wooden strip will rekindle.

2) The purpose of the E device is to remove a small amount of carbon dioxide gas that is not completely reacted in the generated oxygen, when the potassium superoxide sample is close to the completion of the reaction, due to the large amount of carbon dioxide gas remaining, the carbon dioxide gas entering the E device increases a lot, and the lime water in E will react to generate a large amount of calcium carbonate, so the turbidity of E increases significantly; Therefore, the answer is: the turbidity in E is significantly increased

Sodium metal can be melted in molten potassium salt, and the temperature is controlled at a slightly higher than the boiling point of potassium, then potassium becomes potassium vapor, and sodium chloride and elemental potassium will be obtained by reacting with KCl in a slippery molten state. In addition, the product of potassium oxidation is KO2

It has strong oxidation and can react with potassium**, and potassium vapor is easy to escape from the Shinshu file and pollute the environment

So choose A

1) FGDEABHI (or IH); The unreacted carbon dioxide is removed, and the water in the water tank of the shed Li Xian stops enters the device A and causes danger.

2) This operation is unreasonable. The carbon dioxide chain pat reacts with sodium carbonate, resulting in a reduction in gas when carbon dioxide is purified.

3)4ko 2

2co 22k 2 co 3

3O2 The substance in the nail turns completely white; 4) Take a little residue, dissolve it in a beaker with a small amount of water, and then add a dropwise magenta solution, if the magenta fades to the color, it indicates that the residue contains potassium peroxide or potassium superoxide (other reasonable answers are also acceptable).