Lead Carbonate Precipitation

Pb(NO₃)₂ + Na₂CO₃ → PbCO₃↓ + 2NaNO₃

Tổng quan

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.

Người tham gia

Vai trò	Chất	Hệ số	Trạng thái
Chất phản ứng	Sodium Carbonate Na₂CO₃	1	(aq)
Sản phẩm	Sodium Nitrate NaNO₃	2	(aq)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

Lead carbonate (white lead) has been replaced by TiO₂ in paint.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

Tính chất

Loại: Precipitation
Thuận nghịch: Không
Năng lượng: Tỏa nhiệt
ΔH: -22,0 kJ/mol

Phản ứng liên quan

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 Chloride Precipitation Calcium Carbonate Precipitation 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.