Formation of Sulfur Trioxide

2SO2 + O2 → 2SO3

Visão geral

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.

Participantes

Papel Substância Coeficiente Estado
Reagente Oxygen O 1 (g)
Reagente Sulfur Dioxide SO₂ 2 (g)
Produto Sulfur Trioxide SO₃ 2 (g)

Exemplo do cotidiano

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

Importância industrial

O processo de contacto é o principal método industrial para a produção de ácido sulfúrico, o produto químico industrial mais produzido no mundo com mais de 200 milhões de toneladas anuais. O H₂SO₄ é essencial para fertilizantes, processamento de minérios e síntese química.

Propriedades

Tipo
Synthesis
Reversível
Sim
Energia
Exotérmico
ΔH
-198,2 kJ/mol
Catalisador
Vanadium(V) oxide (V₂O₅)

Reações relacionadas

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)).