What is LiH2PO4? Important knowledge about LiH2PO4.

1. Definition of LiH₂PO₄

LiH₂PO₄, also known as Phosphoric acid lithium salt or Lithium dihydrogen phosphate in English, is a chemical substance with a molecular mass of 115.93 g/mol. The atomic mass of LiH₂PO₄ is 115.93 g/mol. The molecule of LiH₂PO₄ consists of 1 Lithium atom (Li), 2 Hydrogen atoms (H), 1 Phosphorous atom (P), and 4 Oxygen atoms (O). In an aqueous solution, LiH₂PO₄ will dissociate into Li+ and H₂PO₄- ions.

2. Properties: LiH₂PO₄

LiH₂PO₄ is a solid, white, and odorless substance. The pH value of a LiH₂PO₄ solution in water is around 4.5, indicating its characteristic acidity. LiH₂PO₄ is heat-resistant and has the ability to withstand strong acidic environments.

3. Common chemical equations of LiH₂PO₄

LiH₂PO₄ mainly participates in reactions with metals, acids, and salts. Some examples of the chemical reactions of LiH₂PO₄ include:

• Metal Reaction: LiH₂PO₄ + Na -> NaH₂PO₄ + Li
• Acid Reaction: LiH₂PO₄ + HCl -> LiCl + H₃PO₄
• Reaction with salt: LiH₂PO₄ + NaCl -> LiCl + NaH₂PO₄

4. Synthesis of LiH₂PO₄

LiH₂PO₄ is typically synthesized in the laboratory through the reaction between lithium hydroxide (LiOH) and phosphoric acid (H₃PO₄). Industrially, LiH₂PO₄ is usually produced from the reaction between lithium carbonate (Li₂CO₃) and phosphoric acid (H₃PO₄) under suitable temperature and pressure conditions.