Formation of Sulfur Trioxide

2SO2 + O2 → 2SO3

Ikhtisar

Sulfur dioxide reacts with oxygen to form sulfur trioxide in the Contact Process. This reversible reaction requires a vanadium pentoxide catalyst and temperatures around 400-450 C. It is the key step in sulfuric acid manufacturing.

Peserta

Peran Zat Koefisien Keadaan
Reaktan Oxygen O 1 (g)
Reaktan Sulfur Dioxide SO₂ 2 (g)
Produk Sulfur Trioxide SO₃ 2 (g)

Contoh Sehari-hari

This reaction occurring in the atmosphere from volcanic emissions or industrial pollution contributes to acid rain formation.

Pentingnya dalam Industri

The Contact Process is the primary industrial method for producing sulfuric acid, the world's most produced chemical. Over 260 million tonnes of sulfuric acid are made annually using this reaction.

Sifat

Jenis
Synthesis
Dapat Dibalik
Ya
Energi
Eksoterm
ΔH
-198,2 kJ/mol
Katalis
Vanadium(V) oxide (V₂O₅)

Reaksi Terkait

Formation of Calcium Hydroxide Formation of Carbon Monoxide Formation of Nitrogen Dioxide Formation of Potassium Chloride Formation of Sodium Bicarbonate Formation of Sodium Peroxide Formation of Silicon Dioxide Formation of Tungsten Carbide Formation of Copper(II) Sulfide Fischer-Tropsch Synthesis (General)

Frequently Asked Questions

What is the equation for Formation of Sulfur Trioxide?
The balanced equation is: 2SO₂ + O₂ → 2SO₃.
What type of reaction is Formation of Sulfur Trioxide?
Formation of Sulfur Trioxide is a synthesis reaction. It is reversible under certain conditions.
Is Formation of Sulfur Trioxide exothermic or endothermic?
Formation of Sulfur Trioxide is exothermic (releases energy). The enthalpy change (ΔH) is -198.2 kJ/mol.
What conditions are needed for Formation of Sulfur Trioxide?
This reaction requires a catalyst (Vanadium(V) oxide (V₂O₅)).