Formation of Sulfur Trioxide

2SO2 + O2 → 2SO3

개요

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.

참여 물질

역할 물질 계수 상태
반응물 Oxygen O 1 (g)
반응물 Sulfur Dioxide SO₂ 2 (g)
생성물 Sulfur Trioxide SO₃ 2 (g)

일상 속 예시

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

산업적 중요성

황산 제조(접촉법, Contact Process)의 핵심 단계입니다. 황산은 전 세계에서 가장 많이 생산되는 공업 화학품으로, 비료, 폭약, 세제, 금속 가공, 석유 정제에 필수적입니다.

성질

유형
Synthesis
가역 반응
예
에너지
발열
ΔH
-198.2 kJ/mol
촉매
Vanadium(V) oxide (V₂O₅)

관련 반응

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)).