What is the role of N2 in standard gases

Nitrogen can be used as a protective gas because of its stable nature.

Because the chemical properties of nitrogen are stable and inactive, it only reacts under high temperature and high pressure or discharge, and it is non-toxic and non-polluting, widely available, and has a cheap market value, and is usually used as the base gas for standard gases.

The nitrogen molecule is the most stable of the known diatomic molecules, and the relative molecular mass of nitrogen is 27. In the national economy and daily life, nitrogen has a wide range of uses. Due to the chemical inertness of nitrogen, it is often used as a shielding gas, such as:

Fruits, food, bulbs fill gas. In order to prevent some objects from being oxidized by oxygen when exposed to air, fill the granary with nitrogen, which can make the grain not rotten and germinate, and be stored for a long time. Liquid nitrogen can also be used as a deep freezer.

It is also often used as a cryogenic agent in the hospital for surgery to remove spots, bags, beans, etc., that is, to freeze off spots, bags, beans, etc., but it is prone to scarring, so it is not recommended. High-purity nitrogen is used as a carrier gas for instruments such as chromatographs. It is used as a bright annealing shielding gas for copper tubes.

Together with high-purity helium and high-purity carbon dioxide, it is used as a laser gas for laser cutting machines. Nitrogen is also used as a protective gas for food preservation. In the chemical industry, nitrogen is mainly used as a shielding gas, a displacement gas, a washing gas, and a safety guarantee gas.

It is used as a shielding gas for aluminum products, aluminum profile processing, aluminum thin rolling, etc. It is used as a shielding gas for reflow soldering and wave soldering to improve the quality of soldering. It is used as a shielding gas in the production process of float glass to prevent oxidation of the tin bath. **。

N2O stands for nitrous oxide, also known as nitrous oxide.

Nitrous oxide, also known as nitrous oxide (English: nitrous oxide), colorless and sweet gas, is an oxidizing agent, the chemical formula N2O, under certain conditions can support combustion, but stable at room temperature, has a slight anesthetic effect.

The gas was used in the early days of anesthesia in dental procedures, and its anesthetic effect was discovered in 1799 by the British chemist Humphrey Davy. Nitrous oxide is mainly used as an anesthetic in dentistry and surgery.

In the food sector, it is also suitable for suspensions. This suspension can froth milk, syrup, and is used in espresso, chocolate, etc. Nitrous oxide can also be used in the pharmaceutical sector, cosmetics and household products to prevent corrosion of organic liquids and food ingredients.

In industry, nitrous oxide is used for leak detection in underground vacuum and pressurized lines.

Structure of the substance of nitrous oxide:

The molecule of nitrous oxide is a linear structure where one nitrogen atom is attached to another nitrogen atom and the second nitrogen atom is attached to the oxygen atom. Therefore, nitrous oxide can be oxidized to more advanced nitrogen oxides, such as nitric oxide NO2 and NO2.

Reacting nitrous oxide with boiling vaporized alkali metals can produce a range of nitrites, and at high temperatures, nitrous oxide can also oxidize organic matter.

A colorless gas called nitrous oxide (N2O) because it makes people laugh, it is often called "laughing gas".

Under certain conditions, it can support combustion (the same as oxygen, because laughing gas can be decomposed into nitrogen and oxygen at high temperatures), but it is stable at room temperature, has a slight anesthetic effect, and can make people laugh. Its anesthetic effect was discovered in 1799 by the English chemist Humphrey Davy. It is theorized that if N O and Co molecules have similar structures (including electronic formulas), their spatial configurations are linear, and N2O is polar molecules.

Molecular. The CO molecule is a heteronuclear diatomic molecule formed by the combination of one C atom and one O atom, and the molecular shape is straight. According to the electron pairing method (valence bond theory), the C atom (1S22S22Px2PY) and the O atom (1S22S22Px22PY2Pz) each contain two unpaired electrons, from which two covalent bonds can be formed

One is a bond formed by the coupling of 2px along the x-axis, and the other is a bond formed by 2py electrons "shoulder-to-shoulder" along the x-axis.

Nitrogen, with the chemical formula N, is a colorless and odorless gas.

The chemical properties of nitrogen are very inactive, and it can only react with hydrogen to form ammonia under high temperature, high pressure and catalyst conditions; In the case of discharge, it can be combined with oxygen to form nitric oxide; Even reactive metals such as Ca, Mg, Sr, and Ba can only react with them when heated.

Nitrogen is usually a colorless, odorless, inert gas, and nitrogen is generally less dense than air. Nitrogen is one of the main components of air. At standard atmospheric pressure, nitrogen becomes a colorless liquid when cooled to a point and liquid nitrogen becomes a snow-like solid when cooled to a point where it is cooled.

Uses of Nitrogen:

1) Metal processing: bright quenching, bright annealing, nitriding, nitrocarburizing, soft carbonization and other heat treatment nitrogen sources; Shielding gas in the process of welding and powder metallurgy sintering, shielding gas in the development of new materials and production processes of rare earth permanent magnet materials, etc.

2) Electronic industry: lithium battery, large-scale integrated circuit, LED and LCD TV imaging devices, color TV picture tubes, photovoltaic devices, touch screens, cloud computing, Internet of Things and other new electronic components and semiconductor components processing and production process nitrogen source.

3) Metallurgical industry: shielding gas for continuous casting, continuous rolling, and steel annealing process; Converter top and bottom composite nitrogen blowing steelmaking, converter steelmaking sealing, blast furnace top sealing, blast furnace ironmaking pulverized coal injection gas, etc.

4) Food preservation: nitrogen-filled storage and preservation of grains, fruits, vegetables, etc.; Nitrogen-filled fresh-keeping packaging for meat, cheese, pastries, mustard, tea and coffee; Nitrogen filling and oxygen removal of fruit juice, raw oil and jam to keep fresh; Purification and covering of all kinds of bottle wine, etc.

5) Pharmaceutical industry: gas protection in the development process of new medicines, nitrogen storage and preservation of traditional Chinese medicine (such as ginseng); Western medicine injection nitrogen filling; nitrogen filling of storage and containers; The air source for pneumatic transportation of pharmaceutical materials, etc.

6) Chemical industry: protective gas in replacement, cleaning, sealing, leak detection, dry quenching; Gas for catalyst regeneration, petroleum fractionation, chemical fiber production, etc.

7) Chemical fertilizer industry: gas for replacement, sealing, washing, and protection catalyst in the production process of nitrogen fertilizer.

8) Plastics industry: pneumatic transmission of plastic particles; Anti-oxidation in the production and storage of plastics.

9) Rubber industry: packaging and storage of rubber; Tire production and nitrogen-filled tires, etc.

The above content reference: Encyclopedia - Nitrogen.

N2O is nitrous oxide. Nitrous oxide, also known as laughing gas, is an inorganic substance.

The chemical formula N2O is a hazardous chemical.

It is colorless and sweet-smelling gas, and is an oxidizing agent, such as muffled bi can support combustion under certain conditions, but it is stable at room temperature, has a slight anesthetic cover effect, and can make people laugh. Its anesthetic effect was introduced in 1799 by the English chemist Humphrey Davy.

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Apply. 1. Accelerant.

Modified vehicles using nitrogen and oxygen acceleration systems feed nitrogen monoxide into the engine, which is decomposed into nitrogen and oxygen when heated, increasing the combustion rate of the engine and increasing the speed. Oxygen has a combustion-boosting effect and speeds up fuel combustion.

2. Rocket oxidizer.

Nitrous oxide can be used as a rocket oxidizer. This is superior to other oxidants because it is non-toxic, stable at room temperature, easy to store and relatively safe to fly. The second benefit is that it can be easily broken down into breathing air.

The above content reference: Encyclopedia - nitrous oxide.

Nitrogen, with the chemical formula N, is a colorless and odorless gas. The chemical properties of nitrogen are very inactive, and it can only react with hydrogen to form ammonia under the conditions of high track temperature, high pressure and catalyst. In the case of discharge, it can be combined with oxygen to form nitric oxide; Even reactive metals such as Ca, Mg, Sr, and Ba can only react with them when heated.

This high chemical stability of nitrogen is related to its molecular structure. 2 n atoms are combined with three bonds to form a nitrogen molecule, which contains 1 bond and 2 bonds, because in the chemical reaction it is the bond that is first attacked, and in the n molecule, the energy level of the bond is lower than that of the bond, and it is difficult to open the bond, thus making it difficult for n to participate in the chemical reaction.

N2 is nitrogen, which is usually a colorless and odorless gas, and nitrogen is generally less dense than air, and nitrogen accounts for the total amount of the atmosphere, which is one of the main components of air.

The molecular formula of nitrogen is N2, but it must be operated in a closed manner, and the operator must be specially trained and strictly follow the operating procedures.

Nitrogen testing method skills: Stretch the burning stuffy Zheng Feng mg strip into the gas collection cylinder containing nitrogen, and the mg strip will continue to burn; The ashes left over from the combustion are extracted and a small amount of water is added to produce a gas that turns the wet red litmus paper blue, which is indicated to be nitrogen.

Reaction Equation:

Under ignition conditions: 3mg+N2=mg3N2 (magnesium nitride).

mg3n2+6h2o=3mg(oh)2+2nh3↑

Nitrogen is mainly used in the synthesis of ammonia, which is used to make fertilizers, nitric acid and explosives, etc., and ammonia is also an important raw material for synthetic fibers, synthetic resins, synthetic rubber, etc. Due to the chemical inertness of nitrogen, it is often used as a shielding gas.

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N2 is the chemical formula of nitrogen, which is a colorless, odorless, and inert gas that is widely found in nature. Nitrogen makes up 78% of the atmosphere and plays an important role in living systems.

What kind of gas is N2.

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N2 is the chemical formula of nitrogen, which is a colorless, odorless, and inert gas that is widely found in nature. Nitrogen accounts for 78% of the atmosphere and plays an important role in the survival of living systems.

Nitrogen is also widely used in industry, such as in the manufacture of fertilizers, frozen food, and the protection of peroxides. In addition, nitrogen is also used in many experiments in the scientific Shiqinghu laboratory, such as protecting the reaction system, driving liquid chromatography, etc. At the same time, nitrogen is also used in medical containment areas, such as to provide anesthesia during surgery and to increase the concentration of respiratory oxygen. Be cautious.

N2 is the chemical symbol of nitrogen, which is a common colorless, odorless, and non-toxic gas. Nitrogen makes up more than 78% of the air and is one of the main components of air, so it is very common. The molecular formula of nitrogen is N2 and consists of two nitrogen atoms, which is a molecular gas.

Nitrogen is highly chemically inert and does not react easily to other elements or compounds, making it an inert gas in many applications. For example, nitrogen can be used as a shielding gas to prevent metal oxidation at high temperatures, as well as for gas delivery and compression storage.

In addition, nitrogen can be used to make ammonia and other chemicals, as well as in the preparation of desiccant, gas generators and heat treatment equipment.

In life, we can also use nitrogen to do all kinds of interesting experiments. For example, by injecting nitrogen into water, you can create a cold nitrogen ice cream; By injecting nitrogen into a balloon, it is possible to create an inflated nitrogen balloon and so on.

In conclusion, nitrogen is a very common gas with high chemical inertness, which is widely used in industry, scientific research and life.