Formation of Sulfur Dioxide

S + O2 → SO2

概述

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.

参与者

角色 物质 系数 状态
反应物 Sulfur S 1 (s)
反应物 Oxygen O 1 (g)
产物 Sulfur Dioxide SO₂ 1 (g)

日常示例

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

工业重要性

二氧化硫是生产硫酸（接触法）的原料，全球年产硫酸约2.5亿吨。烟气中的SO₂排放会形成酸雨，因此燃煤电厂和冶炼厂必须安装烟气脱硫装置。

属性

类型
Synthesis
可逆
否
能量
放热
ΔH
-296.8 kJ/mol

相关反应

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.