What is K2S2O7? Important Knowledge about K2S2O7

1. Definition of K₂S₂O₇

K₂S₂O₇, also commonly known as Potassium Pyrosulfate in both Vietnamese and English. It is a chemical compound with a molecular mass of 254.34 g/mol. The molecular structure of K₂S₂O₇ includes 2 potassium atoms (K), 2 sulfur atoms (S), and 7 oxygen atoms (O). In the formation of ions, there are 2 K+ ions and 1 (S₂O₇)₂- ion.

2. Properties of K₂S₂O₇

2.1 Physical properties of K₂S₂O₇
K₂S₂O₇ is a solid, colorless and odorless substance. It has a neutral pH when dissolved in water.

2.2 Chemical properties of K₂S₂O₇
K₂S₂O₇ has strong oxidative properties, and can react with many other substances such as metals, acids, nonmetals, and salts.

3. Common chemical equations involving K₂S₂O₇
   K₂S₂O₇ often participates in oxidation reactions, such as reactions with compounds containing the CH₂OH group to form the COOH group.

4. Synthesis of K₂S₂O₇

4.1 Laboratory synthesis of K₂S₂O₇
K₂S₂O₇ can be synthesized from SO₂ and K₂S₂O₈ in an acidic environment, or from the decomposition of K₂S₂O₈.

4.2 Industrial synthesis of K₂S₂O₇
In industry, K₂S₂O₇ is usually synthesized from the oxidation of K₂SO₄ with O₂ in a high-temperature environment.