Formation of Sulfur Dioxide

S + O2 → SO2

Aperçu

Sulfur burns in oxygen with a characteristic blue flame to produce sulfur dioxide, a pungent-smelling gas. This reaction is the first step in the industrial production of sulfuric acid. Sulfur dioxide is also a significant atmospheric pollutant.

Participants

Rôle Substance Coefficient État
Réactif Sulfur S 1 (s)
Réactif Oxygen O 1 (g)
Produit Sulfur Dioxide SO₂ 1 (g)

Exemple du quotidien

The smell of a struck match comes partly from sulfur dioxide produced as the match head burns.

Importance industrielle

This reaction is the first step of the Contact Process for sulfuric acid manufacturing. It is also relevant to understanding volcanic emissions and industrial pollution.

Propriétés

Type
Synthesis
Réversible
Non
Énergie
Exothermique
ΔH
-296,8 kJ/mol

Réactions associées

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 Dioxide?
The balanced equation is: S + O₂ → SO₂.
What type of reaction is Formation of Sulfur Dioxide?
Formation of Sulfur Dioxide is a synthesis reaction.
Is Formation of Sulfur Dioxide exothermic or endothermic?
Formation of Sulfur Dioxide is exothermic (releases energy). The enthalpy change (ΔH) is -296.8 kJ/mol.