Lead Sulfate Precipitation

Pb(NO₃)₂ + Na₂SO₄ → PbSO₄↓ + 2NaNO₃

Aperçu

Lead nitrate reacts with sodium sulfate to form a white precipitate of lead sulfate (Ksp = 2.5 × 10⁻⁸). PbSO₄ is the discharged form of lead-acid battery electrodes. The mineral form is anglesite, named after Anglesey in Wales.

Participants

Rôle	Substance	Coefficient	État
Réactif	Sodium Sulfate Na₂SO₄	1	(aq)
Produit	Sodium Nitrate NaNO₃	2	(aq)

Exemple du quotidien

When a car battery dies, both electrodes have converted to lead sulfate in a process called sulfation, which is reversed by charging.

Importance industrielle

Lead sulfate formation limits lead-acid battery capacity. Understanding and preventing sulfation is key to battery longevity.

Propriétés

Type: Precipitation
Réversible: Non
Énergie: Exothermique
ΔH: -19,0 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 Lead Sulfate Precipitation?

The balanced equation is: Pb(NO₃)₂ + Na₂SO₄ → PbSO₄↓ + 2NaNO₃.

What type of reaction is Lead Sulfate Precipitation?

Lead Sulfate Precipitation is a precipitation reaction.

Is Lead Sulfate Precipitation exothermic or endothermic?

Lead Sulfate Precipitation is exothermic (releases energy). The enthalpy change (ΔH) is -19.0 kJ/mol.