What is Na2S2O3? Important knowledge about Na2S2O3.

1. Definition of Na₂S₂O₃

Na₂S₂O₃ is the chemical formula for sodium thiosulfate, an important chemical often used in the industry. Its English name is Sodium thiosulfate. It consists of 2 sodium atoms, 2 sulfur atoms and 3 oxygen atoms. Its molecular mass is 158.11 g/mol. The molecule Na₂S₂O₃ has a unique structure with a bridge bond between the two sulfur atoms.

2. Properties of Na₂S₂O₃

2.1 Physical properties of Na₂S₂O₃: Na₂S₂O₃ usually exists in the form of colorless, odorless crystals and has a neutral PH level.

2.2 Chemical properties of Na₂S₂O₃: Na₂S₂O₃ is capable of reacting with iodine to create sodium iodide and sulfuric acid. It can also react with strong acids to produce sulfur, sodium sulfate, and water.

3. Common chemical equations for Na₂S₂O₃:

Na₂S₂O₃ + 2HCl -> 2NaCl + S + SO₂ + H₂O

Na₂S₂O₃ + I₂ -> 2NaI + S + SO₂

4. Synthesis of Na₂S₂O₃:

4.1 Laboratory synthesis of Na₂S₂O₃: In the laboratory, Na₂S₂O₃ is usually synthesized by reacting Na₂SO₃ with sulfur.

Na₂SO₃ + S -> Na₂S₂O₃

4.2 Industrial synthesis of Na₂S₂O₃: In industry, Na₂S₂O₃ is typically produced by heating sodium sulfate with sulfur and charcoal to create sodium thiosulfate.