Formation of Sulfur Dioxide
S + O2 → SO2
Overview
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
| Role | Substance | Coefficient | State |
|---|---|---|---|
| Reactant | Sulfur S | 1 | (s) |
| Reactant | Oxygen O | 1 | (g) |
| Product | Sulfur Dioxide SO₂ | 1 | (g) |
Everyday Example
The smell of a struck match comes partly from sulfur dioxide produced as the match head burns.
Industrial Importance
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.
Properties
- Type
- Synthesis
- Reversible
- No
- Energy
- Exothermic
- ΔH
- -296.8 kJ/mol
Related Reactions
Fischer-Tropsch Synthesis (General)
Formation of Aluminum Oxide
Formation of Ammonia (Haber Process)
Formation of Barium Oxide
Formation of Barium Sulfate
Formation of Beryllium Oxide
Formation of Cadmium Oxide
Formation of Calcium Carbonate from Oxides
Formation of Calcium Hydroxide
Formation of Calcium Oxide (Quicklime)
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.