Lead Chloride Precipitation

Pb(NO₃)₂ + 2NaCl → PbCl₂↓ + 2NaNO₃

Обзор

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.

Участники

Роль	Вещество	Коэффициент	Состояние
Реагент	Sodium Chloride NaCl	2	(aq)
Продукт	Sodium Nitrate NaNO₃	2	(aq)

Пример из жизни

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

Промышленное значение

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

Свойства

Тип: Precipitation
Обратимая: Нет
Энергия: Экзотермическая
ΔH: -14,0 kJ/mol

Связанные реакции

Aluminum Hydroxide Precipitation Barium Sulfate Precipitation Cadmium Sulfide Precipitation (Yellow) Calcium Phosphate Precipitation (Bone Mineral) Chromium(III) Hydroxide Precipitation Lead Carbonate Precipitation Magnesium Hydroxide Precipitation Copper Sulfide Precipitation Cobalt(II) Hydroxide 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.