Lead Carbonate Precipitation

Pb(NO₃)₂ + Na₂CO₃ → PbCO₃↓ + 2NaNO₃

Обзор

Lead nitrate reacts with sodium carbonate to form a white precipitate of lead carbonate (Ksp = 7.4 × 10⁻¹⁴). Basic lead carbonate (2PbCO₃·Pb(OH)₂), known as white lead, was the most important white pigment for millennia until its toxicity led to replacement by titanium dioxide.

Участники

Роль	Вещество	Коэффициент	Состояние
Реагент	Sodium Carbonate Na₂CO₃	1	(aq)
Продукт	Sodium Nitrate NaNO₃	2	(aq)

Пример из жизни

White lead paint was used in homes for centuries before being banned due to lead poisoning, especially dangerous for children.

Промышленное значение

Lead carbonate (white lead) has been replaced by TiO₂ in paint. Understanding lead precipitation is important for lead contamination remediation.

Свойства

Тип: Precipitation
Обратимая: Нет
Энергия: Экзотермическая
ΔH: -22,0 kJ/mol

Связанные реакции

Aluminum Hydroxide Precipitation Barium Sulfate Precipitation Cadmium Sulfide Precipitation (Yellow) Calcium Phosphate Precipitation (Bone Mineral) Chromium(III) Hydroxide Precipitation Magnesium Hydroxide Precipitation Copper Sulfide Precipitation Cobalt(II) Hydroxide Precipitation Mercury(II) Sulfide Precipitation (Vermilion) Iron(III) Hydroxide Precipitation

Frequently Asked Questions

What is the equation for Lead Carbonate Precipitation?

The balanced equation is: Pb(NO₃)₂ + Na₂CO₃ → PbCO₃↓ + 2NaNO₃.

What type of reaction is Lead Carbonate Precipitation?

Lead Carbonate Precipitation is a precipitation reaction.

Is Lead Carbonate Precipitation exothermic or endothermic?

Lead Carbonate Precipitation is exothermic (releases energy). The enthalpy change (ΔH) is -22.0 kJ/mol.