There are too many chemicals, especially organic chemistry, and there are too many physical properti

It's the same with inorganic classes, so remember it by heart.

The simplest formula of H: CH3O3, the molecular formula: C2H6O6 (including crystal water), the relative molecular mass: 126, The simple formula of the structure of H anhydrous: Hooc—COOH or (CoOH)2

Analysis: The amount of ethanol is as follows: , and the complete reaction with ethanol (1:2), indicating that the carboxylic acid H is a dibasic carboxylic acid, and the neutralization with NaOH is also a 1:2 reaction.

Let the relative molecular mass of h be x

The amount of the substance that consumes NaOH is:

h －－2naoh

x 2 solution: x 126

Since there are two carboxyl groups in it, the relative molecular mass of the two carboxyl groups is: 45 2 90 The relative molecular mass of the rest of the part is: 126 90 36 (just the relative molecular mass of two crystalline waters).

The structure of h may be short form of hooc—cooh·2h2o and because:

The amount of substance used for decomposition of h is:

The amount of substances that produce CO2 is:

The amount of substance that generates CO is:

The amount of substances that produce H2O is:

The number ratio is c:h:o 2:6:6=1:3:3

Therefore, the simplest formula of H is CH3O3, the molecular formula is: C2H6O6 (including crystal water), the molecular weight is: 126, and the structure of H anhydrous is shortened: Hooc-COOH, I hope it can help you.

The simplest form of h is cho2

The molecular formula is. The relative molecular mass is 126

The structure is simply hooc-cooh

From the decomposition reaction, it can be inferred that the proportion of CHO in H can be deduced. From the esterification reaction, the acid contains two carboxyl groups, and its molecular mass can be deduced by combining the neutralization reaction of the previous step.

In the bonding type, there are -oh -cl and so on at the end, and there are no carbon atoms left.

Molecular Formula: C11H20O

Those that are not marked with element symbols are considered to be C atoms, and in the above figure, -OH is a hydroxyl group, and the molecular formula is C11H20O

No, there must be none. It's a hydroxyl group!

1. Description: (1) It may be a carboxylic acid (2) It is acidic (it can be neutralized with alkali, it can react with alkaline oxides, it can react with active metals to release hydrogen, it can make purple litmus red, etc.) (3) It can be esterified with alcohol to form esters Yes-OH can be explained: (1) It may be an alcohol, which has the properties of alcohol (2) It can react with active metals to release hydrogen under certain conditions (3) Esterification reaction can occur to form ester and water (4) Intermolecular dehydration reaction can occur (5) Substitution reaction with hydrogen halide can occur 2

1) Hydrocarbons containing one or more benzene rings in the molecule belong to aromatic hydrocarbons. Benzene is the simplest and most basic aromatic hydrocarbon. (2) The valence bond of the 6 carbon atoms in the benzene molecule is exactly the same, which is a unique bond between the single bond and the double bond, and all the atoms of the benzene molecule are in the same plane, with a planar regular hexagonal structure, and the bond angle is 120°, which is a non-polar molecule.

3) Benzene is a colorless liquid with a special odor, toxic, insoluble in water, less dense than water, melting point, boiling point. Benzene can be condensed into colorless crystals when cooled with ice. (4) The chemical properties of benzene are more stable than those of alkenes and alkynes, but because the carbon-carbon bond in the benzene molecule is a unique bond between the single bond and the double bond, benzene can have both substitution reaction (similar to alkanes) and addition reaction (similar to olefins) under certain conditions.

5) It can react with pure bromine to form bromobenzene (colorless liquid, denser than water) (6) It can be heated with a mixture of concentrated nitric acid and sulfuric acid to 55 60 to react, and the hydrogen atom on the benzene ring is replaced by nitro to form nitrobenzene (colorless oily liquid with bitter almond flavor, denser than water, toxic) (7) It can be combined with hydrogen under the conditions of catalyst and heating to form cyclohexane (8) Benzene is burned in the air and emits a bright flame with thick smoke to generate CO2 and H2O (9) Benzene is added to KMno4 solution, the upper layer is colorless, and the lower layer is purple-red: benzene is added to bromine water, the upper layer is yellow, and the lower layer is colorless, and the benzene extracts the bromine from the bromine water.

There is also CO after full combustion, which indicates that there is insufficient oxygen (so this cannot be called full combustion, the description is not rigorous), and the total mass of combustion products is 3g+m(O2)=3+

The weight gain of concentrated sulfuric acid indicates the generation, that is, the amount of the substance of the hydrogen atom is, and the mass is the weight gain of soda lime, which indicates the generation, that is, the amount of the carbon atom substance in carbon dioxide is, the mass of the mass so the mass of the CO substance is the amount of the CO substance is , the carbon atom in the carbon monoxide then the total weight of the organic matter is, the hydrogen atom is only present in water, so the carbon atom is altogether, the hydrogen atom is the total (, i.e., so the oxygen atom, the amount of the substance is.

Apparently the molecular formula is C3H8O

Benzene is not prone to addition reactions.

Because the benzene ring is a closed conjugated system, from the perspective of molecular orbitals, the bond level of its major bond is 3, relatively stable, so it is not easy to add, take the reaction with chlorine as an example, under the irradiation of ultraviolet light, benzene reacts with chlorine to generate hexahexane, and ethylene and chlorine carbon tetrachloride solution reaction can obtain dichloroethane.

Hope it helps!

If you don't understand, please ask!

Yes, an addition reaction can occur.

However, benzene is more stable, and its bond length is between single and double bonds, not double bonds, and hydrogenation reactions occur under harsher conditions.

Ethylene is prone to addition reactions, and benzene is not prone to addition reactions.

The bond of benzene is a special chemical bond that constitutes the stable structure of benzene, so it is not easy to undergo addition reaction compared to ethylene.

Ethylene contains carbon-carbon double bonds, which can undergo addition reactions with addition reagents such as bromine water, and benzene can also undergo addition reactions with hydrogen under certain conditions.

Ethylene is prone to addition reactions Benzene can react with hydrogen but requires a catalyst, so the reaction is not easy to proceed.

Hydrogen refueling conditions are high.

Vaguely it can also be added to bromine water, don't have conditions.