What is KH2PO4? Important knowledge about KH2PO4

Definition of KH₂PO₄
1.1 Names
1.1.1 KH₂PO₄ is often referred to as Hydrogen Potassium Phosphate or Potassium Phosphate Acid.
1.1.2 In English, its common name is Potassium dihydrogen phosphate.
1.2 The atomic mass of KH₂PO₄ includes one potassium atom (K), two hydrogen atoms (H), and one phosphate molecule (PO₄).
1.3 The atomic mass of KH₂PO₄ is 136.09 g/mol.
1.3.1 The molecular structure of KH₂PO₄ includes one potassium atom, two hydrogen atoms, and one phosphate group.
1.4 Ion Structure: In aqueous solution, KH₂PO₄ dissociates into K+ ions and H₂PO₄- ions.

Properties of KH₂PO₄
2.1 Physical properties of KH₂PO₄
State: crystalline solid
Color: colorless
Odor: odorless
pH: 4.5 – 5
2.2 Chemical properties of KH₂PO₄
KH₂PO₄ is not easily combustible and does not corrode metal.

Common chemical equations of KH₂PO₄
Reaction with base:
KH₂PO₄ + KOH -> K₂HPO₄ + H₂O

Synthesis of KH₂PO₄
4.1 Laboratory synthesis of KH₂PO₄
KH₂PO₄ can be synthesized by a reaction between H₃PO₄ and KOH.
4.2 Industrial synthesis of KH₂PO₄
Industrially, KH₂PO₄ is produced by reacting K₂CO₃ (produced from potassium chloride and sodium carbonate) with H₃PO₄.