Sodium Hydroxide and Phosphoric Acid
3NaOH + H3PO4 → Na3PO4 + 3H2O
概要
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.
参加者
| 役割 | 物質 | 係数 | 状態 |
|---|---|---|---|
| 反応物 | Phosphoric Acid H₃PO₄ | 1 | (aq) |
| 反応物 | Sodium Hydroxide NaOH | 3 | (aq) |
| 生成物 | Water H₂O | 3 | (l) |
日常の例
Trisodium phosphate (TSP) was once the main ingredient in heavy-duty household cleaners and dishwasher detergents before environmental regulations limited phosphate use.
産業上の重要性
リン酸ナトリウム類は食品加工、水処理、洗浄剤、緩衝剤に使用される。環境規制により工業的使用パターンは変化している。
特性
- 可逆的
- いいえ
- エネルギー
- 発熱性
- ΔH
- -173.0 kJ/mol
関連する反応
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.