What is K2O7S2? Important knowledge about K2O7S2.

1. Definition of K₂O₇S₂

K₂O₇S₂, also known as Potassium heptaoxodisulphate, is a chemical compound composed of two atoms of potassium (K), seven atoms of oxygen (O), and two atoms of sulfur (S).

1.1 Names
1.1.1 Common name: Potassium heptaoxodisulphate.
1.1.2 English name: Potassium heptaoxodisulphate.
1.2. Molar mass: 254.32 g/mol.
1.3. Molecular structure: K₂O₇S₂.
1.4 Ion structure: There are two K+ ions and one (SO₄)₂- ion.

2. Characteristics: K₂O₇S₂

2.1 Physical properties of K₂O₇S₂
State: Solid.
Colour: White.
Odour: Odourless.
pH: Not applicable.
2.2 Chemical properties of K₂O₇S₂: It is mainly used as a strong bleach, strong reductant, and strong oxidant.

3. Common chemical reactions of K₂O₇S₂

The chemical reactions of K₂O₇S₂ often involve oxidation or reduction processes. However, it should be noted that K₂O₇S₂ does not always participate in chemical reactions.

4. Synthesis of K₂O₇S₂

4.1 Laboratory synthesis of K₂O₇S₂: K₂O₇S₂ is synthesized by preparing potassium persulfate (K₂S₂O₈) from potassium bisulfate and then oxidizing it with excess oxygen.
4.2 Industrial synthesis of K₂O₇S₂: In industry, K₂O₇S₂ is usually produced by preparing potassium persulfate from potassium bisulfate and then oxidizing it with excess oxygen.