What is H2C2O7? Important knowledge about H2C2O7.

1. Definition of H₂C₂O₇

H₂C₂O₇, also known as oxalic acid, is a type of dihydrate. In English, it is referred to as Oxalic acid. It has a molar mass of 90.0349 g/mol. Its molecular structure includes two hydrogen atoms, two carbon atoms, and seven oxygen atoms. In water, H₂C₂O₇ can form two ions: H+ and C₂O₄ 2-.

2. Properties of H₂C₂O₇

2.1 Physical properties of H₂C₂O₇: In solid state, H₂C₂O₇ is white and odorless. It has a pH level of about 1.3 when in a 0.1M aqueous solution.
2.2 Chemical properties of H₂C₂O₇: H₂C₂O₇ has a strong ability to create electrolysis reactions, and can react with metals to form salts and water.

3. Common chemical equations for H₂C₂O₇:

   • Reaction with metals: H₂C₂O₇ + Ca -> CaC₂O₄ + H₂
   • Reaction with acids: H₂C₂O₇ + H₂SO₄ -> 2CO₂ + SO₂ + 2H₂O
   • Reaction with non-metals: H₂C₂O₇ + Cl₂ -> 2CO₂ + 2HCl
   • Reaction with salts: H₂C₂O₇ + NaOH -> NaHC₂O₄ + H₂O

4. Synthesis of H₂C₂O₇

4.1 Laboratory synthesis of H₂C₂O₇: H₂C₂O₇ can be synthesized by heating KMnO₄ in an acidic environment.
4.2 Industrial synthesis of H₂C₂O₇: Industrially, H₂C₂O₇ is often produced from sugar beet pulp, a by-product of sugar processing.