Lead Chloride Precipitation

Pb(NO3)2 + 2NaCl → PbCl2↓ + 2NaNO3

Übersicht

Lead nitrate reacts with sodium chloride to form a white precipitate of lead chloride (Ksp = 1.7 × 10⁻⁵). PbCl₂ is moderately insoluble at room temperature but becomes quite soluble in hot water, distinguishing it from AgCl. The precipitate consists of fine needle-like crystals.

Teilnehmer

Rolle Substanz Koeffizient Zustand
Reaktant Sodium Chloride NaCl 2 (aq)
Produkt Sodium Nitrate NaNO₃ 2 (aq)

Alltägliches Beispiel

In qualitative analysis, PbCl₂ is separated from AgCl and Hg₂Cl₂ by dissolving it in hot water, a key step in Group I cation analysis.

Industrielle Bedeutung

Lead chloride precipitation is important in lead recycling processes and in understanding lead contamination behavior in water treatment.

Eigenschaften

Typ
Precipitation
Reversibel
Nein
Energie
Exotherm
ΔH
-14,0 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 Calcium Carbonate Precipitation Iron(III) Hydroxide Precipitation

Frequently Asked Questions

What is the equation for Lead Chloride Precipitation?
The balanced equation is: Pb(NO₃)₂ + 2NaCl → PbCl₂↓ + 2NaNO₃.
What type of reaction is Lead Chloride Precipitation?
Lead Chloride Precipitation is a precipitation reaction.
Is Lead Chloride Precipitation exothermic or endothermic?
Lead Chloride Precipitation is exothermic (releases energy). The enthalpy change (ΔH) is -14.0 kJ/mol.