3 Hydrogen Peroxide Solution For 10 Minutes Is Used As

HYDROGEN PEROXIDE

Hydrogen peroxide (hydrogen peroxide), is an inorganic compound, chemical formula H ₂ O ₂, relative molecular mass of 34.02, colourless liquid, relative density of 1.465g/cm ³, melting point -1 ° C, boiling point of 150.2 ° C, the pure article is easy to decomposition of water and oxygen, commercially available for 30% or 3% of the aqueous solution, the more stable in the dark, see the light or meet the impurity will accelerate the decomposition. Decomposition, a small amount of acid, sodium stannate, sodium pyrophosphate, ethanol, acetanilide or acetoethoxyaniline can increase its stability.

A Brief History of Research
In 1818, the French chemist Ténard first heat-treated recrystallised barium nitrate (with transition metal ions removed) to obtain barium oxide BaO, which was then converted into barium peroxide BaO₂ by high-temperature oxidation; BaO₂ was then treated with hydrochloric acid, and Ba²- ions were removed by precipitation method with H₂SO₄, Ag₂SO H₂O₂) aqueous solution is obtained by removing Cl- ions with H₄, adding Ag₂SO₂, and then adding BaO to remove SO₄²- ions; finally, pure H₂O₂, which is almost anhydrous, can be prepared by distillation under reduced pressure.Thenard also made some studies on the properties of H₂O₂ after the preparation of the product. did some research on its properties and found that when H₂O₂ was treated with MnO₂, the MnO₂ would catalyse the decomposition of H₂O₂ to release oxygen. Based on the volume of oxygen released, Thenard concluded that hydrogen peroxide must contain twice as much oxygen as water. 

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