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What Are Peroxides And Superoxides?

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Oxides are compounds (of course they must be pure). Its composition contains only two elements, one of which must be oxygen element, if the other is a metal element, it is called a metal oxide; if the other is not a metal element, it is called a non-metal oxide.
Peroxide, got its name because it contains peroxy or peroxy ions in the molecule. In addition, hydrogen peroxide, which has a very weak acidity, reacts with alkali to generate peroxide. Therefore, peroxide can also be regarded as a salt of hydrogen peroxide. Metals that can generate peroxides are mainly alkali metals and alkaline earth metals.
Sodium peroxide Sodium peroxide is one of the products of sodium burning in oxygen or air. Pure sodium peroxide is white, but the sodium peroxide that is generally seen is light yellow. The reason is that a small amount of sodium superoxide is formed during the reaction. . Sodium peroxide is easily deliquescent and corrosive, so it should be sealed and stored; it has strong oxidizing properties and can be used to bleach textiles, straw, feathers, etc.

Alkali metals and alkaline earth metals, which are extremely metallic, can produce oxides with higher oxygen content than peroxides when burned in excess oxygen under certain conditions, which we call superoxides. In addition, superoxide hydrogen also belongs to superoxide. The superoxide ion in superoxide is formed after the molecule as a whole acquires an electron, so the stability is very poor and it is a strong reducing agent.
Potassium superoxide
Potassium superoxide is a primary oxidant, similar to Group I metal peroxides in many respects. In case of flammable substances, organic substances, reducing agents, etc., it will cause combustion or even explosion. It can also explode if it encounters water or steam to generate a lot of heat. It is extremely hygroscopic and reacts violently with water to generate oxygen and an alkaline peroxide solution that can be further decomposed. With paramagnetism.

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