The difference between methane and ethane, what is the difference between methane, ethane, propane,

Methane molecular formula CH4. The simplest organic compounds. Methane is a colorless, odorless gas, boiling point, lighter than air, and it is a flammable gas that is extremely difficult to dissolve in water.

Methane and air are a mixture in the right proportion, which can occur in case of sparks**. The chemical properties are quite stable, and it generally does not react with strong acids, strong alkalis or strong oxidants (such as KMNO4). Under the right conditions, oxidation, pyrolysis and halogenation reactions will occur.

413kj mol, 109°28, the methane molecule is a tetrahedral space configuration, and the above structural formula only represents the connection of each atom in the molecule, but cannot truly represent the relative position of each atom in space. It is a slightly toxic class. Allows the gas to safely diffuse into the atmosphere or be used as a fuel.

It has a simple asphyxia effect, and poisoning is caused by hypoxic asphyxia at high concentrations. In the air up to 25-30% appear dizziness, rapid breathing, dyskinesia.

The physical properties are as follows

Toxicity is chemical

When the concentration of ethane is less than 50%, it has no toxic effect, and when the concentration is high, it can displace air and cause hypoxia, causing simple asphyxiation.

Guinea pigs exposed to ethane concentrations, 2 hours, showed mild respiratory irregularities, but stopped contact and recovered quickly. 15% 19% ethane when mixed with oxygen, it is a cardiac sensitizer.

When the concentration in the air is greater than 6%, people can experience hypoxic symptoms such as dizziness, mild nausea, mild anesthesia and convulsions.

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Methane is CH4 and the structure is tetrahedral C is C2H6 in the tetrahedral centroid at four H V points, and the structure is as follows: both methane structures are removed from one C and connected to each other, both of which are hydrocarbons.

There is a big difference, they have different numbers of carbon atoms, B can undergo a elimination reaction to form ethylene, acetylene.

Methane is CH4

Ethane is C2H6

See Connections for details.

<> differences: methane, ethane, propane, and butane molecules have different numbers of carbon atoms, respectively, which determines that the unit heat generated by their combustion is different, and increases with the increase of carbon atoms;

1. Methane: It is widely distributed in nature, methane is the simplest organic matter, is the main component of natural gas, biogas, pit gas, etc., commonly known as gas, it can be used as fuel and raw materials for the manufacture of hydrogen, carbon black, carbon monoxide, acetylene, hydrocyanic acid and formaldehyde;

2. Ethane: the second member of the same series of alkanes, which is the simplest hydrocarbon containing carbon-carbon single bond, and the content of ethane in some natural gas is 5% to 10%, second only to methane; And in the end.

The differences between propane and methane are as follows:

Propane is an organic compound, hail, colorless, liquefiable gas. Slightly soluble in water, soluble in ethanol and ether. It is mixed with Bu containing air to form a ** mixture.

Present in natural gas and petroleum pyrolysis gas. The chemical properties are stable and not easy to undergo chemical reactions. It is used as a refrigerant, fuel for internal combustion engines or raw materials for organic synthesis.

Methane is an organic compound with the molecular formula CH4 and molecular weight, which is the simplest organic substance. Methane is widely distributed in nature and is the main component of natural gas, biogas, pit gas, etc., commonly known as gas.

Main Uses of Propane:

Propane is commonly used as fuel for barbecues, portable stoves, and motor vehicles. Propylene LPG tanks are commonly used to power trains, buses, forklifts and taxis, and are also used as fuel for heating and cooking in RVs and camping. In some rural North America, propane is used to fill heat-producing appliances such as stoves, water heaters, and hand dryers.

As of 2000, 6.9 million U.S. households relied on propane as their primary fuel. Commercial"Propane"Fuel, or liquefied petroleum gas, is impure. In the United States and Canada, the main ingredient is 90% propane plus up to 5% butane and propylene, as well as odorants.

This is the domestic standard in the United States and Canada, often written as the HD-5 standard. It should be noted that liquefied petroleum gas prepared from methane (natural gas) does not contain propylene, only propane obtained from the ** refining process is contained. Similarly, in some other countries, such as Mexico, the standard level of butane will be relatively high.

Methane properties are as follows:1. Physical properties of methane.

Color: Colorless, with a blue flame after combustion.

Odor: Odorless.

Melting point:. Boiling point:.

Solubility: At 20, kPa, 100 unit volume of water can dissolve 3 unit volume of methane.

2. Chemical properties of methane.

Methane is relatively stable and does not react with strong oxidants such as potassium permanganate, nor with strong acids and bases. But under certain conditions, methane can also undergo certain reactions.

Laboratory preparation of methane:Anhydrous sodium acetate (CH3COONA) and soda lime (NaOH and CAO as desiccant).

Reaction equation: CH3COONA+NAOH=NA2CO3+CH4.

Collection: Drainage method.

Features and precautions:

Methane must be produced by reacting anhydrous sodium acetate with dry alkali lime, and if sodium acetate crystals or lime are not dried, methane gas can hardly be produced.

The operational precautions and collection methods for this experiment are exactly the same as those for oxygen.

Methane, chemical formula CH4, is the simplest hydrocarbon that consists of one carbon and four hydrogen atoms hybridized by sp3, so the structure of the methane molecule is a regular tetrahedral structure, and the bond lengths of the four bonds are the same and the bond angles are equal. In its standard state, methane is a colorless and odorless gas.

The biogas produced when some organic matter decomposes in the absence of oxygen is actually methane. Theoretically, the bonding formula of methane can be expressed as a point "·" But I haven't actually seen this usage, probably because of "·" The number can also represent electrons. That's why methane is considered unbonded in secondary school.

Methane is mainly used as a fuel, such as natural gas and coal gas, and is widely used in civil and industrial applications. As a chemical raw material, it can be used to produce acetylene, hydrogen, synthetic ammonia, carbon black, carbon disulfide, methylene chloride, methylene chloride, chloroform, carbon tetrachloride and hydrocyanic acid.

Chemical reaction. The main chemical reactions of methane are: combustion, reintegration of steam into gas, and halogenation.

In general, the methane reaction is difficult to control. Methane can be oxidized to methanol, but it is generally very difficult to complete this chemical reaction, because in general, the oxidation reaction products of methane are usually carbon dioxide and water, and it is difficult to produce methanol even if oxygen is insufficient.

However, this oxidation reaction can be easily done with the help of enzymes, such as methane monooxygenase, but the yield cannot reach the scale of industrial production.

The above content refers to Encyclopedia-Methane.

Methane, with the molecular formula CH4, is a colorless and odorless flammable gas with a boiling point of -164 and a melting point. Slightly soluble in water, soluble in ethanol, ether and other organic solvents, mixed with air can form a first-class mixture.

Methane can be used as a fuel; Industrially, it is mainly used for the production of syngas, for the manufacture of synthetic ammonia, hydrogen and methanol, etc., and can also be used for the production of acetylene, ethylene, carbon disulfide, hydrocyanic acid and carbon black; Methane chlorination is available.

Mono, di, chloroform and carbon tetrachloride.

Methane content distribution

Methane and hydrogen are also present in Uranus' atmosphere. According to experiments by scientists at the German Institute for Nuclear Physics, methane is produced in both plants and leaf litter, and the amount of methane produced increases with temperature and sunlight. In addition, plants produce 10 to 100 times more methane than decaying plants.

They estimate that plants produce 10 to 30 percent of the world's methane each year.

Methane found in planets According to foreign reports, American astronomers announced on the 19th that they found methane in the atmosphere of a planet outside the solar system for the first time, which is the first time that scientists have detected organic molecules on an extrasolar planet, thus increasing the hope of confirming the existence of life outside the solar system. The team also confirmed previous speculation that the planet, called HD 189733b, had water in its atmosphere.

Methane is an organic substance and is a gas at room temperature. It can be burned, heat is released, and water and carbon dioxide are generated. It is composed of hydrocarbon atoms connected by carbon-hydrogen bonds, and its chemical properties are relatively stable.

Methane can undergo substitution reactions, such as the formation of different halogenated hydrocarbons from chlorine, and of course bromine. His hydrogen atom is replaced by a hydroxyl group, which is to produce methanol!

There are two differences between chemical and physical properties:

Methane is a colorless, odorless gas, lighter than air, and is a flammable gas that is extremely difficult to dissolve in water. Methane and air are a mixture in the right proportion, which can occur in case of sparks**. The chemical properties are quite stable in the cavity slag, and generally do not react with strong acids, strong alkalis or strong oxidants.

Under the right conditions, oxidation, pyrolysis and halogenation reactions will occur. It is a slightly toxic class that allows the gas to be safely diffused into the atmosphere or used as a fuel. It has a simple asphyxia effect, and poisoning is caused by hypoxic asphyxia at high concentrations.

Ethane is a flammable gas under standard conditions, colorless, odorless, flammable, and can form a first-class mixture when mixed with air, and there is a risk of burning when exposed to heat sources and open flames. Industrially produced ethane is separated from natural gas or a by-product of oil refineries. It decomposes into ethylene and hydrogen at high temperatures, so it is a raw material for the production of ethylene in the petrochemical industry.

Violent chemical reactions occur in contact with fluorine, chlorine, etc.

Methane, ethane, propane, and butane are all monoalkyl n-alkanes, and they are all basic molecules in alkanes. However, there are also some differences between them. First of all, their molecular weights are different, methane has the smallest molecular weight and is the most stable among the four hydrocarbons, while butane has the largest molecular weight and is relatively unstable.

Secondly, their chemical properties are also different. For example, methane is insoluble in water due to its weak molecular polarity, while propane and butane can interact with water. In addition, the four hydrocarbons are prone to combustion reactions under different conditions.

For example, methane has a greater ability to cause fires in the air than other alkanes. This is why methane is widely used in the natural gas sector.

Finally, they have different physical properties. The four hydrocarbons differ in physical form, with methane being gaseous and ethane being liquid, while propane and butane are common colorless liquids. Their boiling and melting points are also different, and because of this, they can be used in different fields, for example, methane is particularly suitable for use as a gaseous fuel for natural gas, while ethane can be used to synthesize other organic compounds, such as ethanol.

Methane is the simplest hydrocarbon in structure. It is widely found in natural gas, biogas, coal mine pit gas, is a high-quality gaseous fuel, and is also an important raw material for the manufacture of syngas and many chemical products. At the molecular level, methane is a more active greenhouse gas than carbon oxide, but it is present in smaller quantities in the atmosphere.

Methane is the substance with the simplest molecular composition of hydrocarbons, with the chemical formula CH4

Methane is a colorless, odorless gas, solubility: slightly soluble in water, soluble in alcohol, ether. , density (standard condition) grams, boiling point, melting point heat of combustion (kj mol): critical temperature ( ).

Critical pressure (MPa): flash point ( ) 188, ignition temperature ( ) 538Under certain conditions, methane can undergo reactions such as halogenation (Cl2, Br2) and thermal decomposition (decomposition into C, H2, C2H2, etc.).

When methane is burned, the flame is blue-white. The main component of biogas, pit gas, and natural gas is methane. Methane in natural gas is liquefied at low temperatures and under pressure and can be transported across the ocean by special vessels.

Chemical properties of methane: Methane pre-dismantling is stable and does not react with acidic KMNO4 solution or bromine water. A mixture of methane and air ignites occurs**. The limit of methane in air is volume), and the limit in oxygen is the volume of methane).