Calcium Sulfate Precipitation (Gypsum)

Ca(NO₃)₂ + Na₂SO₄ → CaSO₄↓ + 2NaNO₃

Genel Bakış

Calcium nitrate reacts with sodium sulfate to precipitate calcium sulfate (Ksp = 4.9 × 10⁻⁵). CaSO₄ is sparingly soluble, not truly insoluble. The dihydrate form (CaSO₄·2H₂O) is gypsum, one of the most important construction materials. Plaster of Paris is the hemihydrate form.

Katılımcılar

Rol	Madde	Katsayı	Hal
Reaktan	Sodium Sulfate Na₂SO₄	1	(aq)
Ürün	Calcium Sulfate CaSO₄	1	(s)
Ürün	Sodium Nitrate NaNO₃	2	(aq)

Günlük Örnek

Drywall (gypsum board) used in nearly every building contains calcium sulfate dihydrate, produced by similar precipitation chemistry.

Endüstriyel Önemi

Gypsum production exceeds 250 million tonnes annually for drywall, plaster, cement, and soil amendment. FGD gypsum from power plants is increasingly important.

Özellikler

Tür: Precipitation
Geri Dönüşümlü: Hayır
Enerji: Ekzotermik
ΔH: -8,0 kJ/mol

İlgili Reaksiyonlar

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 Calcium Sulfate Precipitation (Gypsum)?

The balanced equation is: Ca(NO₃)₂ + Na₂SO₄ → CaSO₄↓ + 2NaNO₃.

What type of reaction is Calcium Sulfate Precipitation (Gypsum)?

Calcium Sulfate Precipitation (Gypsum) is a precipitation reaction.

Is Calcium Sulfate Precipitation (Gypsum) exothermic or endothermic?

Calcium Sulfate Precipitation (Gypsum) is exothermic (releases energy). The enthalpy change (ΔH) is -8.0 kJ/mol.