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
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)
Hydrochloric Acid and Sodium Hydroxide Neutralization
Nitric Acid and Potassium Hydroxide Neutralization
Hydrochloric Acid and Barium 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.