Is benzene an oily liquid and is benzene a gas or a liquid

Yes, benzene (C6H6) organic compound, is the simplest composition of aromatic hydrocarbons, at room temperature is a colorless, sweet transparent liquid, and has a strong aromatic odor. Benzene is flammable, toxic, and a class I carcinogen of IARC. There are roughly 3 kinds of chemical reactions in which benzene molecule benzene participates:

One is the substitution reaction that occurs between the other groups and the hydrogen atom on the benzene ring; One is the addition reaction that occurs on the C-C double bond; One is the breakage of the benzene ring.

Substitution reaction

See "Substitution reactions" and "Electrophilic aromatic substitution reactions" for details

The hydrogen atoms on the benzene ring can be replaced by halogens, nitro groups, sulfonic acid groups, hydrocarbon groups, etc. under certain conditions to form corresponding derivatives. Due to the different substituents and the different positions and quantities of hydrogen atoms, isomers with different numbers and structures can be generated.

The electron cloud density of the benzene ring is large, so most of the substitution reactions that occur on the benzene ring are electrophilic substitution reactions. The electrophilic substitution reaction is the representative reaction of the aromatic ring. When electrophilic substitution is performed in benzene substituents, the position of the second substituent is related to the type of original substituent[1][4].

The boiling point of benzene is and the melting point is, and it is a colorless, aromatic and transparent liquid at room temperature, which is volatile. Benzene is less dense than water, with a density of , but its molecular mass is heavier than water. Benzene is insoluble in water, and the maximum amount of benzene dissolved in 1 liter of water is dissolved; But benzene is a good organic solvent with a strong ability to dissolve organic molecules and some non-polar inorganic molecules.

Benzene can form a constant boiling substance with water, and the boiling point is , containing benzene. Therefore, benzene is often distilled in reactions where water is formed to bring the water out.

The saturation vapor pressure between 10-1500 mmHg can be calculated according to the Antoine equation.

lgp = a － p/(c + t)

Parameters: a = , b = , c =

where the unit of p is mmHg and the unit of t is [4].

Benzene is a colorless to light yellow transparent oily liquid with a strong aromatic odor and volatilizes quickly at room temperature.

Stupid is liquid.

Benzene is a hydrocarbon organic compound, that is, the simplest aromatic hydrocarbon, the molecular formula is Ch, at room temperature is a sweet, flammable, carcinogenic and toxic colorless transparent liquid, with a strong aromatic odor. It is insoluble in water, soluble in organic solvents, and can also be used as an organic solvent in itself.

The ring system of benzene is called benzene ring, and the structure of benzene ring after removing a hydrogen atom is called phenyl group, which is expressed by pH, so the chemical formula of benzene can also be written as phh. Benzene is a basic raw material for petrochemical industry, and its output and technical level of production are one of the indicators of the development level of a country's petrochemical industry.

Health hazards. Due to the high volatility of benzene, it can easily diffuse when exposed to air. Acute and chronic benzene poisoning can be caused by inhalation or exposure of large amounts of benzene into the body by humans and animals. Studies have reported that benzene poisoning is caused in part by the production of phenol in the body.

Ben should be stored in a low-temperature ventilated place, away from fire and heat sources; Separate storage with oxidants, edible chemicals, etc.; It is forbidden to use tools that are prone to sparks.

Special attention: 1. Long-term inhalation will infringe on the human nervous system, and acute poisoning will produce nerve spasm and even coma and death.

2. Among leukemia patients, a large proportion have a history of exposure to benzene and its organic products.

The above content reference: Encyclopedia-Benzene.

Benzene is a hydrocarbon, i.e. the simplest aromatic hydrocarbon, which is a liquid.

Benzene is a sweet, flammable, carcinogenic and transparent liquid with a strong aromatic odor at room temperature. It is insoluble in water, soluble in organic solvents, and can also be used as an organic solvent in itself. The ring system of benzene is called benzene ring, and the structure of benzene ring after removing one hydrogen atom is called phenyl group.

Benzene is a basic raw material for petrochemical industry, and its output and technical level of production are one of the indicators of the development level of a country's petrochemical industry. Studies have proved that the carbon atoms on the benzene ring backbone are not arranged by single and double bonds as previously recognized, and that the bonds between each two carbon atoms are the same, and are connected by a bond that is neither double or single bond.

Question 1: What is benzene? Is it a gas or a liquid Benzene (C6H6) is a colorless, sweet-smelling, transparent liquid at room temperature and has a strong aromatic odor.

Question 2: What color is benzene Benzene is a colorless, special aromatic smell liquid, which can be miscible with alcohol, ether, acetone and carbon tetrachloride, and slightly soluble in water. Benzene has the characteristics of volatile and flammable, and its vapor is the most advanced.

Frequent exposure to benzene** can become dry and scaly due to degreasing, and some develop allergic eczema. Long-term inhalation of the aplastic type can lead to aplastic anemia.

Question 3: What color is benzene? Must be colorless.

Question 4: Will benzene and sodium hydroxide stratify? Who's on the top? Who's on the lower floor? Also Is benzene a liquid? What color? Benzene is a colorless and transparent liquid at room temperature.

Sodium hydroxide is solid, and the solid is below.

However, it should be said that it is an aqueous solution, so the aqueous solution of sodium hydroxide is below, and benzene is on top.

Question 5: What is the color of chlorine, bromine and iodine in carbon tetrachloride and benzene water respectively Water color Gasoline color Benzene color Carbon tetrachloride color.

chlorine, yellow-green, yellow-green, yellow-green, yellow-green, yellow-yellow, green, bromine, orange.

Iodine, brown, fuchsia, fuchsia, fuchsia.

Benzene is highly toxic and is a carcinogen.

Benzene is a highly flammable, aromatic, colorless liquid at room temperature.

Basic introduction: benzene (benzene, ch) organic compound, is the simplest composition of aromatic hydrocarbons, at room temperature is a colorless, sweet, oily transparent liquid, its density is less than water, with a strong special odor. Flammable, toxic, and a Class I carcinogen in IRC. Benzene is insoluble in water, soluble in organic solvents, and can also be used as an organic agent itself.

The melting point is, and the boiling point is. If cooled with water, it can be condensed into colorless crystals. Benzene is a basic raw material for petrochemical industry.

The production and technical level of benzene production is one of the indicators of the development level of a country's petrochemical industry. The ring system that benzene has is called benzene ring, which is the simplest aromatic ring. The structure of the benzene molecule after removing one hydrogen is called phenyl group, which is denoted by pH.

Hence benzene can also be expressed as PHH.

Basic uses: used as synthetic dyes, synthetic rubber, synthetic resins, synthetic fibers, synthetic grains, plastics, pharmaceuticals, pesticides, photographic films and petrochemical products important raw materials, this product has good solubility properties, so it is widely used as adhesives and industrial solvents such as: varnish, nitro fiber paint thinner, paint remover, lubricating oil, grease, wax, celluloid, resin, artificial leather and other solvents.

Basic Properties: Physical Properties:

Chemical properties: There are roughly three kinds of chemical reactions in which benzene participates: one is the substitution reaction that occurs between other groups and hydrogen atoms on the benzene ring; One is the addition reaction that occurs on the benzene ring (note: the benzene ring does not have a carbon-carbon double bond, but a unique bond between a single bond and a double bond, and the six carbon atoms on the benzene ring form a special bond to increase its stability); One is general combustion (oxidation reaction) (which does not fade acidic potassium permanganate).

What is the reason for the cooling of the hot phenol concentration solution After the hot phenol concentration solution is cooled, it is only turbid and there is no crystal precipitation? It turns out that the melting point of phenol is very low (43 at normal pressure), the melting point of phenol containing water is even lower, and when phenol contains more than 10 water, it is liquid at room temperature. Therefore, the turbid liquid obtained in our experiment is actually a mixture of liquid phenol and aqueous phenol solution.

Since the temperature is below 70, liquid phenol is not completely miscible with water and is turbid. And because there are no small particles of solid phenol in this turbid mixture, there will be no crystal precipitation after a long time. Therefore, the phenol produced after the sodium phenol solution is introduced into carbon dioxide is in liquid state and separated by water and separated by liquid separation.

2. The phenomenon of hydrochloric acid dropwise or carbon dioxide gas in the aqueous solution of sodium phenol After the hot phenol concentrated solution is cooled, the turbid oil layer is deposited at the bottom, which indicates that the oil layer formed by the liquid phenol and a small amount of phenol aqueous solution is denser; However, when hydrochloric acid is added to the aqueous solution of sodium phenol or carbon dioxide gas is passed into the aqueous solution of sodium phenol, the turbid oil layer formed by more phenol is floating on the liquid surface. This is naturally due to the high density of sodium chloride (NaCl) or sodium bicarbonate (NaHCO3) in the aqueous solution layer, so there is a phenomenon that the aqueous liquid phenol floats up and stratified with the aqueous solution. So your teacher is right.