Manganese Dioxide Precipitation

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

Übersicht

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.

Teilnehmer

Rolle Substanz Koeffizient Zustand
Reaktant Hydrogen Peroxide H₂O₂ 1 (aq)
Reaktant Sodium Hydroxide NaOH 2 (aq)
Produkt Sodium Sulfate Na₂SO₄ 1 (aq)
Produkt Water H₂O 2 (l)

Alltägliches Beispiel

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

Industrielle Bedeutung

Manganese dioxide is used in dry cell and alkaline batteries, as a catalyst, as a pigment, and in water treatment for iron and manganese removal.

Eigenschaften

Typ
Precipitation
Reversibel
Nein
Energie
Exotherm
ΔH
-200,0 kJ/mol

Verwandte Reaktionen

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.