Manganese Dioxide Precipitation

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

概述

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.

参与者

角色 物质 系数 状态
反应物 Hydrogen Peroxide H₂O₂ 1 (aq)
反应物 Sodium Hydroxide NaOH 2 (aq)
产物 Sodium Sulfate Na₂SO₄ 1 (aq)
产物 Water H₂O 2 (l)

日常示例

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

工业重要性

二氧化锰（MnO₂）是碱性电池和干电池的阴极活性材料，也用作催化剂（H₂O₂分解、有机氧化）、颜料和水处理除铁除锰剂，年用量数十万吨。

属性

类型
Precipitation
可逆
否
能量
放热
ΔH
-200.0 kJ/mol

相关反应

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.