Sodium Hydroxide and Phosphoric Acid

3NaOH + H₃PO₄ → Na₃PO₄ + 3H₂O

Tổng quan

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.

Người tham gia

Vai trò	Chất	Hệ số	Trạng thái
Chất phản ứng	Phosphoric Acid H₃PO₄	1	(aq)
Chất phản ứng	Sodium Hydroxide NaOH	3	(aq)
Sản phẩm	Water H₂O	3	(l)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

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

Tính chất

Loại: Double Replacement
Thuận nghịch: Không
Năng lượng: Tỏa nhiệt
ΔH: -173,0 kJ/mol

Phản ứng liên quan

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.