Sodium Hydroxide and Phosphoric Acid

3NaOH + H3PO4 → Na3PO4 + 3H2O

Обзор

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.

Участники

Роль Вещество Коэффициент Состояние
Реагент Phosphoric Acid H₃PO₄ 1 (aq)
Реагент Sodium Hydroxide NaOH 3 (aq)
Продукт Water H₂O 3 (l)

Пример из жизни

Trisodium phosphate (TSP) was once the main ingredient in heavy-duty household cleaners and dishwasher detergents before environmental regulations limited phosphate use.

Промышленное значение

Sodium phosphates are used in food processing, water treatment, cleaning products, and as buffering agents. Environmental phosphate regulations have changed their industrial use patterns.

Свойства

Тип
Double Replacement
Обратимая
Нет
Энергия
Экзотермическая
ΔH
-173,0 kJ/mol

Связанные реакции

Iron(III) Chloride and Sodium Hydroxide Ammonia and Hydrochloric Acid (White Smoke) Calcium Carbonate and Hydrochloric Acid Calcium Chloride and Sodium Carbonate Barium Chloride and Sodium Sulfate Precipitation Calcium Hydroxide and Carbon Dioxide (Limewater Test) Sodium Hydroxide and Iron(III) Chloride (Rust Color) Sodium Hydroxide and Hydrochloric Acid Neutralization Potassium Hydroxide and Sulfuric Acid 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.