What is Na2O2? Important knowledge about Na2O2.

1. Definition of Na₂O₂

1.1 Names
1.1.1 Common name: Sodium peroxide
1.1.2 English name: Sodium peroxide
1.2. Atomic mass: 77.98 g mol−1
1.3. The molecular mass of Na₂O₂ is 77.98 g/mol.
1.3.1 Molecular structure: Each Na₂O₂ molecule consists of 2 sodium atoms and 2 oxygen atoms.
1.4 Ion structure: Na₂O₂ forms 2 Na+ ions and 1 O₂���2 ion.

2. Properties of Na₂O₂

2.1 Physical properties of Na₂O₂
State: Solid at room temperature
Color: White or light yellow
Odor: Odorless
pH level: Na₂O₂ is a strong alkali, with a pH above 7.
2.2 Chemical properties of Na₂O₂: It produces sodium oxide and oxygen when reacting with water. It also produces sodium oxide when heated.

3. Common chemical equations of Na₂O₂
   Metal reaction [if any]: Na₂O₂ does not react with metals.
   Acid reaction [if any]:
   Example: Na₂O₂ + 2HCl -> 2NaCl + H₂O₂(hydrogenperoxide)
   Non-metal reaction [if any]: Na₂O₂ does not react with non-metals.
   Reaction with salt [if any]: Na₂O₂ does not react with salts.

4. Preparation of Na₂O₂

4.1 Laboratory preparation of Na₂O₂: Na₂O₂ cannot be prepared in the laboratory.
4.2 Industrial preparation of Na₂O₂: Na₂O₂ is produced by thermally decomposing sodium with oxygen at temperatures around 130-200°C.