- Definition of Nitrogen (N):
Nitrogen is a colorless, odorless, tasteless, non-toxic, and non-flammable chemical element. Nitrogen is the main component of air, accounting for about 78% of the volume. In English, Nitrogen is called Nitrogen. The atomic mass of Nitrogen is 14.0067. The atomic weight of Nitrogen is 14. Nitrogen has a molecular structure of N2. Common Nitrogen ions are ammonium ions (NH4+) and nitrate ions (NO3-).
- Properties of Nitrogen:
2.1 Physical Properties: Nitrogen is in a gaseous state at standard temperature and pressure, colorless, odorless, and tasteless. The pH of Nitrogen gas is 7, which means it is neutral.
2.2 Chemical Properties: Nitrogen is quite inert in the air because it is chemically inactive. Nitrogen has the ability to combine with some other elements such as hydrogen, oxygen, sulfur to form compounds.
- Common chemical equations:
Common chemical reactions of Nitrogen include reactions with metals such as lithium, sodium, potassium to form nitrite; reactions with acids such as nitric acid, sulfuric acid to form ammonia; reactions with non-metals such as carbon, silicon to form nitrogen oxide; reactions with salts such as potassium nitrate, sodium nitrate to form nitrogen.
- Preparation of Nitrogen:
4.1 Laboratory preparation: Nitrogen can be prepared in the laboratory by heating ammonia with iron and aluminum powder.
4.2 Industrial preparation: In industry, Nitrogen is prepared from the air by using chemical or mechanical methods to separate Nitrogen from the air.