What are the chemical properties of nitrogen oxides? What is the nitric oxide chemical formula

NO, colorless gas, not a salt oxide, oxidized to NO2 with oxygen

NO2, a reddish-brown gas, reacts with water to form NO2 and nitric acid

The chemical formula of nitric oxide is NO. Nitrogen oxide is a colorless and odorless gas that is insoluble in water. Due to nitric oxide.

With free radicals.

This makes it chemically very lively. When it reacts with oxygen, it forms a corrosive gas, nitrogen dioxide.

no2）。<

Features:

Nitric oxide functions as a messenger molecule. When the endothelium sends a relaxation command to the muscles to promote blood circulation, it produces nitric oxide molecules, which are small enough to easily cross the cell membrane.

Nitrogen oxide oxidizes in the air to nitric dioxide, which reacts with water to form nitric acid and nitrous acid, so at room temperature and high temperatures, moist nitric oxide corrodes too much metal. At room temperature, materials can be used: carbon steel, stainless steel, aluminum alloys, monel, corrosion-resistant nickel-based alloys, tungsten, and PTFE.

Polychlorotrifluoroethylene, polyethylene.

Ordinary glass is missing, borosilicate glass and quartz.

The above content reference: Encyclopedia - Nitric Oxide.

The electronic formula of nitrogen dioxide is shown in the figure, nitrogen dioxide is a typical molecule with a large bond structure. The major bond contains four electrons, two of which enter bonding orbitals and two into nonbonding orbitals. Nitrogen dioxide molecules are V-shaped, polar molecules.

In the NO2 molecule, the number of valence electrons around N is 5, and according to the valence shell electron pair mutual exclusion theory (VSEPR theory), the oxygen atom does not donate electrons, therefore, the total number of valence electrons of the central nitrogen atom is 5, which is equivalent to three pairs of electron pairs. Two of these pairs are bonding electron pairs, and one singular electron is treated as a lone electron pair.

Nitrogen dioxide properties

Physical. Nitrogen dioxide (NO2) is a reddish-brown pungent gas at temperature; It is a dark brown liquid when it is underneath. It is a colorless solid at temperatures below ll.

Molecular weight, melting point, boiling point, vapor pressure, soluble in alkali, carbon disulfide, soluble in water. The nature is relatively stable.

Chemical properties. Nitrogen dioxide dissolves in water and reacts with water to form nitric acid.

3no2+h2o===2hno3+no↑

4no2+2h2o+o2===4hno3

However, nitrogen dioxide does not react completely when dissolved in water, so there will be a small number of nitrogen dioxide molecules, which are yellow.

Nitrogen dioxide (NO2) is a pungent brownish-red gas at temperature. Toxic gases. The density is greater than that of air and it is easy to liquefy.

Soluble in water; It is a dark brown liquid when it is underneath. It is a colorless solid at temperatures below -ll and nitrous oxide for pressurized liquids. Molecular weight 92, melting point, boiling point, vapor pressure, soluble in alkali, carbon disulfide and chloroform, soluble in water.

The nature is relatively stable. Nitrogen dioxide is not an acidic oxide. Nitrogen dioxide is denser than air Nitrogen dioxide dissolves in water and reacts with water to form nitric acid 3NO2+H2O4HNO3 But nitrogen dioxide does not react completely after dissolving in water, so there will be a small number of nitrogen dioxide molecules, which are yellow.

As a result, the nitric acid solution will appear yellow. This reaction can be considered reversible because nitric acid decomposes at the same time. Because nitrogen dioxide also produces nitric oxide when dissolved in water, it is not an anhydride of nitric acid.