Sulfurous Acid and Sodium Hydroxide

H2SO3 + 2NaOH → Na2SO3 + 2H2O

概述

Sulfurous acid reacts with two equivalents of sodium hydroxide to form sodium sulfite and water. Sulfurous acid is formed when sulfur dioxide dissolves in water and is a diprotic acid. It is unstable and cannot be isolated as a pure substance.

参与者

角色 物质 系数 状态
反应物 Sodium Hydroxide NaOH 2 (aq)
产物 Water H₂O 2 (l)

日常示例

Sodium sulfite is used as a preservative in dried fruits and wine, where it prevents oxidation and browning.

工业重要性

亚硫酸钠用于纸浆和纸张工业漂白、食品防腐剂（SO₂当量）及摄影定影液，是重要的工业还原剂。

属性

类型
Acid-Base
可逆
否
能量
放热
ΔH
-106.0 kJ/mol

相关反应

Hydrochloric Acid and Barium Hydroxide Acetic Acid and Sodium Acetate Buffer System Acetic Acid Dissociation in Water Ammonia and Hydrochloric Acid Ascorbic Acid and Sodium Hydroxide Barium Hydroxide and Ammonium Thiocyanate (Endothermic) Carbonic Acid and Sodium Hydroxide Aluminum Hydroxide as Amphoteric Acid with NaOH Aluminum Chloride and Chloride Ion (Lewis Acid-Base) Formic Acid and Sodium Hydroxide

Frequently Asked Questions

What is the equation for Sulfurous Acid and Sodium Hydroxide?
The balanced equation is: H₂SO₃ + 2NaOH → Na₂SO₃ + 2H₂O.
What type of reaction is Sulfurous Acid and Sodium Hydroxide?
Sulfurous Acid and Sodium Hydroxide is a acid-base reaction.
Is Sulfurous Acid and Sodium Hydroxide exothermic or endothermic?
Sulfurous Acid and Sodium Hydroxide is exothermic (releases energy). The enthalpy change (ΔH) is -106.0 kJ/mol.