Sodium Hydroxide and Phosphoric Acid
3NaOH + H3PO4 → Na3PO4 + 3H2O
概述
Sodium hydroxide reacts with phosphoric acid in a 3:1 ratio to completely neutralize the triprotic acid, forming trisodium phosphate and water. Partial neutralization gives mono- or disodium phosphate depending on the molar ratio. Each salt has different industrial applications.
参与者
| 角色 | 物质 | 系数 | 状态 |
|---|---|---|---|
| 反应物 | Phosphoric Acid H₃PO₄ | 1 | (aq) |
| 反应物 | Sodium Hydroxide NaOH | 3 | (aq) |
| 产物 | Water H₂O | 3 | (l) |
日常示例
Trisodium phosphate (TSP) was once the main ingredient in heavy-duty household cleaners and dishwasher detergents before environmental regulations limited phosphate use.
工业重要性
磷酸钠系列产品用于食品加工、水处理、洗涤剂和纸浆漂白，是重要的工业化学品系列。
属性
- 可逆
- 否
- 能量
- 放热
- ΔH
- -173.0 kJ/mol
相关反应
Iron(III) Chloride and Sodium Hydroxide
Calcium Chloride and Sodium Carbonate
Barium Chloride and Sodium Sulfate Precipitation
Calcium Hydroxide and Carbon Dioxide (Limewater Test)
Magnesium Hydroxide and Hydrochloric Acid (Antacid)
Lead Nitrate and Potassium Iodide (Golden Rain)
Copper(II) Sulfate and Sodium Hydroxide
Sodium Hydroxide and Iron(III) Chloride (Rust Color)
Sodium Hydroxide and Hydrochloric Acid Neutralization
Aluminum Hydroxide and Hydrochloric Acid
Frequently Asked Questions
What is the equation for Sodium Hydroxide and Phosphoric Acid?
The balanced equation is: 3NaOH + H₃PO₄ → Na₃PO₄ + 3H₂O.
What type of reaction is Sodium Hydroxide and Phosphoric Acid?
Sodium Hydroxide and Phosphoric Acid is a double replacement reaction.
Is Sodium Hydroxide and Phosphoric Acid exothermic or endothermic?
Sodium Hydroxide and Phosphoric Acid is exothermic (releases energy). The enthalpy change (ΔH) is -173.0 kJ/mol.