Hydrogen Peroxide Disproportionation
2H2O2 → 2H2O + O2
Genel Bakış
Hydrogen peroxide simultaneously acts as both oxidizing and reducing agent in this disproportionation reaction. One molecule is reduced to water (O goes from -1 to -2) while another is oxidized to oxygen gas (O goes from -1 to 0). Manganese dioxide or the enzyme catalase dramatically accelerate this reaction.
Katılımcılar
| Rol | Madde | Katsayı | Hal |
|---|---|---|---|
| Reaktan | Hydrogen Peroxide H₂O₂ | 2 | (aq) |
| Ürün | Oxygen O | 1 | (g) |
| Ürün | Water H₂O | 2 | (l) |
Günlük Örnek
The fizzing when hydrogen peroxide is applied to a wound occurs because catalase enzyme in blood rapidly decomposes H₂O₂, releasing oxygen bubbles.
Endüstriyel Önemi
H₂O₂ decomposition is used in wastewater treatment, as a propellant (concentrated H₂O₂), and catalase activity is important in food processing and biotechnology.
Özellikler
- Tür
- Redox
- Geri Dönüşümlü
- Hayır
- Enerji
- Ekzotermik
- ΔH
- -196,1 kJ/mol
- Katalizör
- MnO₂ or catalase enzyme
İlgili Reaksiyonlar
Iron(II) to Iron(III) Oxidation by Oxygen
Bleaching with Sodium Hypochlorite
Copper Reduction of Silver Ion
Aqua Regia Dissolving Gold
Cerium(IV) Reduction by Iron(II)
Copper Oxidation by Nitric Acid
Hypochlorite Oxidation of Hydrogen Peroxide
Hydrogen Peroxide as Oxidizing Agent (Acidic)
Iodine and Sodium Thiosulfate Titration
Displacement of Hydrogen from Acid by Magnesium
Frequently Asked Questions
What is the equation for Hydrogen Peroxide Disproportionation?
The balanced equation is: 2H₂O₂ → 2H₂O + O₂.
What type of reaction is Hydrogen Peroxide Disproportionation?
Hydrogen Peroxide Disproportionation is a redox reaction.
Is Hydrogen Peroxide Disproportionation exothermic or endothermic?
Hydrogen Peroxide Disproportionation is exothermic (releases energy). The enthalpy change (ΔH) is -196.1 kJ/mol.
What conditions are needed for Hydrogen Peroxide Disproportionation?
This reaction requires a catalyst (MnO₂ or catalase enzyme).