Lead Chloride Precipitation

Pb(NO₃)₂ + 2NaCl → PbCl₂↓ + 2NaNO₃

Visão geral

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.

Participantes

Papel	Substância	Coeficiente	Estado
Reagente	Sodium Chloride NaCl	2	(aq)
Produto	Sodium Nitrate NaNO₃	2	(aq)

Exemplo do cotidiano

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

Importância industrial

A precipitação de cloreto de chumbo é importante nos processos de reciclagem de chumbo e na compreensão do comportamento do chumbo no tratamento de águas contaminadas.

Propriedades

Tipo: Precipitation
Reversível: Não
Energia: Exotérmico
ΔH: -14,0 kJ/mol

Reações relacionadas

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.