- Definition of Zn(NO2)2
Zn(NO2)2, also known as Zinc Nitrite, is a chemical compound that includes the elements zinc (Zn), nitrogen (N), and oxygen (O). In its name, the number 2 after NO2 indicates the amount of nitrite group in each molecule.
1.1 Common name: Zinc Nitrite
1.2 English name: Zinc Nitrite
1.3 Atomic mass: Zinc (Zn) =65.38, Nitrogen (N)=14, Oxygen (O)=16
1.4 Molar mass: The molar mass of Zn(NO2)2 is calculated as the sum of the atomic masses of all its elements, which is 189.38 g/mol.
1.5 Molecular structure: The Zn(NO2)2 molecule consists of one zinc ion Zn2+ and two nitrite ions NO2-.
- Properties of Zn(NO2)2
2.1 Physical properties:
- State: solid at standard conditions
- Color: colorless
- Odor: odorless
- pH: not applicable as it is a solid.
2.2 Chemical properties: Zn(NO2)2 can decompose at high temperatures to form ZnO, NO2 and O2. It can react with strong acids such as H2SO4.
- Common chemical equations
As Zn(NO2)2 is not a metal, it cannot react according to metal reactions. However, it can react with strong acids to form salts and NO2 gas.
- Preparation of Zn(NO2)2
Zn(NO2)2 can be prepared in the laboratory through the reaction between zinc and nitrous acid:
Due to the toxicity and complex chemical properties of NO2, the preparation of Zn(NO2)2 should be conducted under the supervision of a teacher or a chemist.