Hydrofluoric Acid and Sodium Hydroxide

HF + NaOH → NaF + H2O

概述

Hydrofluoric acid, despite being a weak acid (Ka = 6.8 × 10⁻⁴), reacts completely with sodium hydroxide to form sodium fluoride and water. HF is unusually dangerous among weak acids because it penetrates skin and causes deep tissue burns by binding calcium ions in bones. The high heat of neutralization reflects the strong H-F bond.

参与者

角色 物质 系数 状态
反应物 Hydrofluoric Acid HF 1 (aq)
反应物 Sodium Hydroxide NaOH 1 (aq)
产物 Water H₂O 1 (l)

日常示例

Sodium fluoride from this reaction is the form of fluoride added to municipal water supplies and toothpaste for dental protection.

工业重要性

氢氟酸是玻璃蚀刻、半导体清洗（HF腐蚀SiO₂）、石油催化裂化（氟化铝催化剂）和铀浓缩（转化为UF₆）的关键试剂，需要专业的安全操作规程。

属性

类型
Acid-Base
可逆
否
能量
放热
ΔH
-68.6 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 Hydrofluoric Acid and Sodium Hydroxide?
The balanced equation is: HF + NaOH → NaF + H₂O.
What type of reaction is Hydrofluoric Acid and Sodium Hydroxide?
Hydrofluoric Acid and Sodium Hydroxide is a acid-base reaction.
Is Hydrofluoric Acid and Sodium Hydroxide exothermic or endothermic?
Hydrofluoric Acid and Sodium Hydroxide is exothermic (releases energy). The enthalpy change (ΔH) is -68.6 kJ/mol.