Barium Sulfate Precipitation
BaCl2 + Na2SO4 → BaSO4↓ + 2NaCl
Tổng quan
Barium chloride reacts with sodium sulfate to form an extremely insoluble white precipitate of barium sulfate (Ksp = 1.1 × 10⁻¹⁰). BaSO₄ is so insoluble that it is safe to ingest for medical imaging despite barium's toxicity. The precipitate forms instantly as a dense, finely divided white solid.
Người tham gia
| Vai trò | Chất | Hệ số | Trạng thái |
|---|---|---|---|
| Chất phản ứng | Sodium Sulfate Na₂SO₄ | 1 | (aq) |
| Sản phẩm | Barium Sulfate BaSO₄ | 1 | (s) |
| Sản phẩm | Sodium Chloride NaCl | 2 | (aq) |
Ví dụ thực tế
Barium sulfate is the white liquid (barium meal) patients drink before gastrointestinal X-rays to make the digestive tract visible.
Tầm quan trọng công nghiệp
BaSO₄ is used as a radiocontrast agent, as a white pigment (blanc fixe) in paints, in oil well drilling mud, and as a filler in plastics and paper.
Tính chất
- Loại
- Precipitation
- Thuận nghịch
- Không
- Năng lượng
- Tỏa nhiệt
- ΔH
- -24,5 kJ/mol
Phản ứng liên quan
Aluminum Hydroxide 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
Mercury(II) Sulfide Precipitation (Vermilion)
Iron(III) Hydroxide Precipitation
Frequently Asked Questions
What is the equation for Barium Sulfate Precipitation?
The balanced equation is: BaCl₂ + Na₂SO₄ → BaSO₄↓ + 2NaCl.
What type of reaction is Barium Sulfate Precipitation?
Barium Sulfate Precipitation is a precipitation reaction.
Is Barium Sulfate Precipitation exothermic or endothermic?
Barium Sulfate Precipitation is exothermic (releases energy). The enthalpy change (ΔH) is -24.5 kJ/mol.