Is there only gas that can support combustion, but there is no gas that can be burned

Combustion refers to a luminescent, exothermic and intense chemical reaction that occurs between a combustible substance and a combustible substance (oxygen or oxidizing agent).

Combustion must meet the following three conditions: flammable substances; flammable substances; Reach a certain temperature.

In a combustion system, there must be two types of substances: those that support combustion and those that can be combusted.

There are many gases that support combustion, and in the usual combustion reaction, some relatively strong oxidizing gases such as oxygen and chlorine can be regarded as combustible gases. There are too many combustible gases, most of the organic vapors, as well as some relatively reducing gases such as hydrogen, are combustible gases.

Personally, I don't think that combustibles and combustibles are not strict enough to be separated from a certain reaction, so I emphasize the relative above.

As far as carbon dioxide is concerned, carbon dioxide can usually be used as a fire extinguisher, which means that for some substances in general, carbon dioxide is not combustible; However, magnesium, sodium, potassium, etc. can all be burned in carbon dioxide, so for highly reducing substances such as magnesium, sodium, and potassium, carbon dioxide supports combustion.

Similarly, many normally non-flammable substances can be burned in fluorine.

So your statement is not true.

Only oxygen is to support combustion, but there are many combust gases, methane, hydrogen, carbon monoxide and so on.

Yes. Gases such as methane, propane, hydrogen, etc., can be burned.

Gases that do not support combustion are carbon dioxide, argon, neon, radon.

1. Carbon dioxide.

Carbon dioxide, a sock Bu crypto carbon, the chemical formula is CO2, the chemical formula is, in terms of chemical properties, the chemical properties of carbon dioxide are not active, the thermal stability is very high (only decomposition in 2000), can not burn, usually does not support combustion, belongs to acid oxides, has the general properties of acid oxides, because the reaction with water is carbonic acid, so it is the acid anhydride of carbonic acid.

2. Argon. <>

Argon is a colorless, odorless, monoatomic gas, argon is twice as dense as air and 10 times as dense as helium. Argon is an inert gas, which does not react with other substances at room temperature, and is not soluble in liquid metal at high temperature, and can show its superiority when welding non-ferrous metals. It can be used for inflating bulbs and arc welding of stainless steel, magnesium, aluminum, etc., that is, "argon arc welding".

3. Neon. <>

Neon is a colorless, odorless, non-flammable rare gas with the chemical formula NE, usually neon can be used as a filling gas for color neon signs for outdoor advertising displays, and can also be used for visual luminous indicators, voltage regulation, and laser mixture components. It is a gaseous inert gas at room temperature, which does not burn and does not support combustion.

4. Radon. <>

Radon, with the chemical formula Rn, is a noble gas that is colorless, odorless, tasteless, and radioactive. It is inert to most common chemical reactions, such as combustion reactions.

The complete combustion products are all non-combustible and inert gases.

Complete combustion refers to the combustion of all combustible substances (carbon, hydrogen, sulfur, etc.) contained in the fuel after oxidation to produce only carbon dioxide, water and sulfur dioxide. Whereas, carbon dioxide and sulfur dioxide are both non-combustible and inert gases.

When the combustion products (flue gas, ash slag) after combustion no longer contain combustibles, that is, there is no solid combustible matter (solid carbon) left in the ash slag, and no combustible gas (CO, H2, CMHN) exists in the flue gas, it is called complete combustion.

To achieve complete combustion of fuel, the following conditions must be met:

1) There should be good combustion equipment suitable for the fuel variety.

2) When burning lump coal, the fuel should be evenly distributed on the grate (grate) as much as possible, the secondary air should be reasonably used when burning pulverized coal, and the good atomization quality should be ensured for liquid fuel.

3) Provide an appropriate amount of combustion air, that is, the excess air coefficient should be appropriate.

4) The necessary control of the combustion temperature is carried out so that it is not too low or too high.

5) Ensure that the fuel has enough residence time in the furnace (or combustion chamber).

Noble gases refer to the gas elemental substances corresponding to all group 0 elements on the periodic table, also known as noble gases. Sulphur dioxide is a chemical compound, so it cannot be called an inert gas.

Question 1: What other gases can not support combustion in addition to carbon dioxide Chemically stable gases cannot be burned with oxygen, such as nitrogen, all rare gases, carbon tetrachloride, etc., and most of the general flammable gases are organic gases.

Question 2: What gases support combustion and what gases do not support combustion Oxygen supports combustion, and rare gases do not.

Question 3: How many kinds of gases are there in nature that do not support combustion? In general, it is common that CO2 and N2 do not support combustion, but as said upstairs, there are exceptions to the exception mg can be burned in CO2 to replace and so on.

There are also noble gases that do not support combustion, such as HE ne AR and so on.

Question 4: What gases can be burned, what gases support combustion, what gases do not support H2 H2s CO etc. can be burned O2 supports vertical combustion N2 CO2 etc. do not support combustion.

Question 5: What gases can be burned, what gases support combustion, and what gases do not??? H2 H2S Co etc can burn O2 to support combustion N2 Co2 etc do not support combustion.

Question 6: What gases in the air do not support the burning of carbon dioxide.

The universal rule is: in oxygen.

For elemental matter: alkali metals (lithium, sodium, potassium, rubidium, cesium, francium), alkaline earth metals (magnesium, calcium, strontium, barium), hydrogen, carbon can be burned (if the oxygen concentration is large, aluminum, zinc, etc. can also be burned).

For inorganic compounds (sodium chloride, calcium oxide, etc.): almost all are non-flammable, excluding a few compounds (e.g. azide, ammonium salt, can **).

For organic compounds (ethanol, methane, benzene, etc.): almost all are flammable, excluding a few compounds (tetrafluoroethylene, carbon tetrachloride, etc.) where hydrogen is completely replaced

Mixture: look at the proportion of combustible and non-combustible, if the proportion of combustibles is large, it is basically combustible (silk, cotton), and the proportion of non-combustibles is non-combustible (glass fiber blended fabric).

The gas that burns quietly in the air is oxygen.

Nitrogen is the main component of protein, the basis of life, and is one of the three major nutritional elements of plants.

Carbon dioxide is the raw material for plants to photosynthesize and make organic matter;

Inert gases such as argon and neon are often used to fill bulbs to prolong filament life;

Methane and hydrogen are combustible gases that can be used as energy sources;

Some carbon, nitrogen, and sulfur compound gases are harmful to humans, animals and plants, but the content is very small and will not cause harm.

Air, the "gas of life" that we breathe every day, it covers the earth's surface in layers, transparent and colorless and odorless, it is mainly composed of nitrogen and oxygen, and has an important impact on human survival and production.

It's oxygen. Oxygen is a colorless and odorless gas, the most common elemental form of oxygen element, not easily soluble in water, oxygen in the air accounts for about 21%, liquid oxygen is sky blue, solid oxygen is blue crystal. It is not very active at room temperature, and it is not easy to interact with many substances.

Oxygen is the most widely distributed in nature, covering the mass of the crust, and is the most abundant element. Oxygen is needed for the oxidation of hydrocarbons, the treatment of wastewater, rocket propellants, and the respiration of animals and humans in aviation, aerospace and diving. Animal respiration, combustion, and all oxidation processes, including the decay of organic matter, consume oxygen.

But the oxygen in the air is constantly replenished by the photosynthesis of plants. In the cutting and welding of metal, it is high-purity oxygen mixed with combustible gas (such as acetylene) to produce an extremely high temperature flame, which causes the metal to melt.

What is the main gas in the air that supports the deignition of the slag?

1.Nitrogen. 2.Oxygen Digging.

Correct Answer: Oxygen.

The main gas in the air that supports combustion is oxygen. The fire extinguishing principle of fire extinguishers such as carbon dioxide fire extinguishers and dry powder fire extinguishers is to isolate the contact between oxygen and combustibles.