Sodium Hydroxide and Phosphoric Acid

3NaOH + H₃PO₄ → Na₃PO₄ + 3H₂O

Visão geral

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.

Participantes

Papel	Substância	Coeficiente	Estado
Reagente	Phosphoric Acid H₃PO₄	1	(aq)
Reagente	Sodium Hydroxide NaOH	3	(aq)
Produto	Water H₂O	3	(l)

Exemplo do cotidiano

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

Importância industrial

Os fosfatos de sódio são utilizados no processamento alimentar, no tratamento de água, em produtos de limpeza e como agentes tamponantes. As regulamentações ambientais sobre fosfatos alteraram os seus padrões de utilização industrial.

Propriedades

Tipo: Double Replacement
Reversível: Não
Energia: Exotérmico
ΔH: -173,0 kJ/mol

Reações relacionadas

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.