Manganese Dioxide Precipitation

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

Aperçu

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.

Participants

Rôle	Substance	Coefficient	État
Réactif	Hydrogen Peroxide H₂O₂	1	(aq)
Réactif	Sodium Hydroxide NaOH	2	(aq)
Produit	Sodium Sulfate Na₂SO₄	1	(aq)
Produit	Water H₂O	2	(l)

Exemple du quotidien

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

Importance industrielle

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.

Propriétés

Type: Precipitation
Réversible: Non
Énergie: Exothermique
ΔH: -200,0 kJ/mol

Réactions associées

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.