Decomposition of Hydrogen Peroxide

2H2O2 → 2H2O + O2

개요

Hydrogen peroxide spontaneously decomposes into water and oxygen gas. The reaction is dramatically accelerated by catalysts like manganese dioxide, potassium iodide, or the enzyme catalase found in blood and liver tissue. This is a classic demonstration reaction in chemistry education.

참여 물질

역할 물질 계수 상태
반응물 Hydrogen Peroxide H₂O₂ 2 (l)
생성물 Oxygen O 1 (g)
생성물 Water H₂O 2 (l)

일상 속 예시

The fizzing when hydrogen peroxide is applied to a wound occurs because catalase in blood rapidly decomposes H2O2 into water and oxygen bubbles.

산업적 중요성

H₂O₂ 분해의 이해는 안전한 저장과 취급에 중요합니다. 농축된 과산화수소는 폭발적으로 분해될 수 있습니다. 이 반응은 또한 비상 호흡 장치에서 산소를 생성하는 데 사용됩니다.

성질

유형
Decomposition
가역 반응
아니오
에너지
발열
ΔH
-196.0 kJ/mol
촉매
Manganese dioxide (MnO₂) or catalase enzyme

관련 반응

Decomposition of Ammonium Nitrate Decomposition of Calcium Hypochlorite Decomposition of Carbonic Acid Decomposition of Iron(II,III) Oxide (Direct Reduction) Decomposition of Nitrous Oxide (Laughing Gas) Decomposition of Barium Peroxide Decomposition of Sodium Bicarbonate Decomposition of Water (Electrolysis) Thermal Decomposition of Copper(II) Carbonate Cracking of Octane (Thermal Cracking)

Frequently Asked Questions

What is the equation for Decomposition of Hydrogen Peroxide?
The balanced equation is: 2H₂O₂ → 2H₂O + O₂.
What type of reaction is Decomposition of Hydrogen Peroxide?
Decomposition of Hydrogen Peroxide is a decomposition reaction.
Is Decomposition of Hydrogen Peroxide exothermic or endothermic?
Decomposition of Hydrogen Peroxide is exothermic (releases energy). The enthalpy change (ΔH) is -196.0 kJ/mol.
What conditions are needed for Decomposition of Hydrogen Peroxide?
This reaction requires a catalyst (Manganese dioxide (MnO₂) or catalase enzyme).