Manganese Dioxide Precipitation

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

概要

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.

参加者

役割 物質 係数 状態
反応物 Hydrogen Peroxide H₂O₂ 1 (aq)
反応物 Sodium Hydroxide NaOH 2 (aq)
生成物 Sodium Sulfate Na₂SO₄ 1 (aq)
生成物 Water H₂O 2 (l)

日常の例

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

産業上の重要性

二酸化マンガンは乾電池・アルカリ電池の正極材料、触媒（H₂O₂分解）、顔料、廃水処理における酸化剤として利用される。電解二酸化マンガン（EMD）は高純度電池グレードの製品。

特性

タイプ
Precipitation
可逆的
いいえ
エネルギー
発熱性
ΔH
-200.0 kJ/mol

関連する反応

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.