What is Na2SO6? Important knowledge about Na2SO6.

1. Definition of Na₂SO₆

1.1 Names
1.1.1 Common name: Sodium sulfate
1.1.2 English name: Sodium sulfate

1.2. Atomic mass: 142.04 g/mol

1.3. Atomic weight: Na has an atomic weight of 23 g/mol, S has an atomic weight of 32 g/mol, and O has an atomic weight of 16 g/mol.

1.3.1 Molecular structure: A Na₂SO₄ molecule contains 2 Na atoms, 1 S atom, and 4 O atoms.

1.4 Ion structure: Na₂SO₄ forms Na+ ion and SO₄-2 ion.

2. Properties: Na₂SO₆

2.1 Physical properties of Na₂SO₆
State: solid
Color: colorless
Odor: odorless
pH: neutral

2.2 Chemical properties of Na₂SO₆: Sodium sulfate is soluble in water, insoluble in ethanol. When heated, it does not decompose.

3. Common chemical reactions of Na₂SO₆
   3.1 Reaction with strong acids such as HCl to produce sodium chloride, sulfur, and water:
   Na₂SO₄ + 2HCl -> 2NaCl + H₂SO₄

4. Synthesis of Na₂SO₆

4.1 Laboratory synthesis of Na₂SO₆: Sodium sulfate can be synthesized from sodium hydroxide and sulfuric acid:
2NaOH + H₂SO₄ -> Na₂SO₄ + 2H₂O

4.2 Industrial synthesis of Na₂SO₆: On an industrial scale, sodium sulfate is usually produced by absorbing SO₂ gas into a solution of sodium hydroxide:
SO₂ + 2NaOH -> Na₂SO₃ + H₂O
Na₂SO₃ + O₂ -> Na₂SO₄