Manganese Dioxide Precipitation

MnSO4 + 2NaOH + H2O2 → MnO2↓ + Na2SO4 + 2H2O

개요

Manganese(II) sulfate is oxidized by hydrogen peroxide in basic solution to form a dark brown precipitate of manganese dioxide. Mn is oxidized from +2 to +4. MnO₂ is highly insoluble and is a very effective catalyst for H₂O₂ decomposition.

참여 물질

역할 물질 계수 상태
반응물 Hydrogen Peroxide H₂O₂ 1 (aq)
반응물 Sodium Hydroxide NaOH 2 (aq)
생성물 Sodium Sulfate Na₂SO₄ 1 (aq)
생성물 Water H₂O 2 (l)

일상 속 예시

MnO₂ is the black substance in standard alkaline batteries that serves as the cathode material.

산업적 중요성

이산화망간은 알칼리 건전지 및 리튬 1차 전지의 양극 활물질로 가장 광범위하게 사용됩니다. 수처리에서 철·망간 제거를 위한 산화 촉매로도 활용됩니다.

성질

유형
Precipitation
가역 반응
아니오
에너지
발열
ΔH
-200.0 kJ/mol

관련 반응

Aluminum Hydroxide Precipitation Barium Carbonate Precipitation Barium Sulfate Precipitation Cadmium Sulfide Precipitation (Yellow) Calcium Fluoride Precipitation (Fluorite) Calcium Phosphate Precipitation (Bone Mineral) Chromium(III) Hydroxide Precipitation Lead Carbonate Precipitation Lead Chloride Precipitation Iron(III) Hydroxide Precipitation

Frequently Asked Questions

What is the equation for Manganese Dioxide Precipitation?
The balanced equation is: MnSO₄ + 2NaOH + H₂O₂ → MnO₂↓ + Na₂SO₄ + 2H₂O.
What type of reaction is Manganese Dioxide Precipitation?
Manganese Dioxide Precipitation is a precipitation reaction.
Is Manganese Dioxide Precipitation exothermic or endothermic?
Manganese Dioxide Precipitation is exothermic (releases energy). The enthalpy change (ΔH) is -200.0 kJ/mol.