Whether glucose can be esterified with ethanol

First of all, the two substances that undergo esterification reaction must contain a carboxyl group and a hydroxyl group on the other.

Glucose contains five hydroxyl groups, one aldehyde group, and has the properties of polyols and aldehydes. Ethanol contains only a hydroxyl group, so the two substances cannot undergo esterification reaction.

Glucose: (chemical properties).

1) The aldehyde group in the molecule is reducible and can react with silver ammonia solution: CH2OH-(CHOH)4-CHO+2[AG(NH3)2]++2OH-==CH2OH-(CHOH)4-COONH4 2AG H2O 3NH3, which is oxidized into a three-dimensional model of gluconic acid.

2) The aldehyde group can also be reduced to hexahexanol.

3) There are multiple hydroxyl groups in the molecule, which can be esterified with acids.

4) Glucose undergoes an oxidation reaction in the organism and releases heat.

Glucose: (precautions).

1) When intravenously injecting hypertonic glucose injection, attention should be paid to whether the liquid drug leaks out of the blood vessels, so as not to cause phlebitis, and the same complication can also occur when continuously injecting 5%-10% concentration of liquid medicine at the same site.

2)**If the hypertonic solution is used for cerebral edema, if the drug is stopped suddenly, it is easy to rebound and cause cerebral edema to occur again, so the drug should not be stopped suddenly, but should be slowly reduced until it is stopped.

3) Subcutaneous injection should not be done to avoid causing subcutaneous necrosis.

4) Hypertonic glucose injection is prohibited in patients with intracranial or intraspinal membrane hemorrhage and delirium in dehydrated patients to avoid accidents.

No. The structural formula of glucose is CH2OH—CHOH—CHOH—CHOH—CHOH—CHOH—CHOH—CHOH. It belongs to polyhydroxyaldehydes. Esterification with ethanol requires a carboxyl group, and there is no carboxyl group in glucose, so it can't.

In order for esterification to occur, acid dehydroxyl and ethanol must be dehydrogenated, but glucose is not an acid, it only has an aldehyde group without a carboxyl group, so it cannot be esterified with ethanol!

Ethanol and acetic acid undergo esterification reaction under the action of concentrated sulfuric acid as a catalyst and water absorbent to form ethyl acetate and water.

The equation for the esterification reaction of ethanol and acetic acid is: CH3COOH + CH3CH2OH = concentrated H2SO4 heating = (reversible) CH3COOCH2CH3 + H2O. Alcohol and acetic acid undergo esterification reaction under the action of concentrated sulfuric acid as a catalyst and absorbent to form ethyl acetate and water.

Acetic acid, also known as acetic acid (36%--38%), glacial acetic acid (98%), chemical formula CH3COOH, is an organic monobasic acid, which is the main component of vinegar.

Ethanol, organic compound, molecular formula C2H6O, structure simplified formula CH3CH2OH or C2H5OH, commonly known as alcohol. Ethanol is a flammable, volatile colorless and transparent liquid at room temperature and pressure, with low toxicity, and pure liquid cannot be directly consumed.

Esterification reaction is a class of organic chemical reactions, mainly the reaction of alcohol and carboxylic acid or inorganic oxygenated acid to form ester and water. It is divided into three categories: carboxylic acid reaction with alcohol, inorganic oxygenated acid reaction with alcohol and inorganic strong acid reaction with alcohol. The esterification reaction of carboxylic acid and alcohol is reversible, and the reaction is generally very slow, so concentrated sulfuric acid is often used as a catalyst.

ch cooh +ch ch oh== concentrated h so heating == (reversible) ch cooch ch + h o

In the presence of adequate oxygen, Acetobacterium bacteria are able to produce acetic acid from foods containing alcohol. Cider or wine is usually used mixed with grains, malt, and malt.

Rice or potatoes are mashed and fermented. Alcohol and acetic acid in concentrated sulfuric acid.

As a catalyst, esterification reaction occurs under the action of water absorbent to generate ethyl acetate.

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Glucose. The chemical equation of the esterification reaction between glucose and acetic acid reacts with acetic acid.

C6H12O6 (glucose) + 6CH3COOH CH3CO-OCH2-CHO (CH3CO)-CHO (CH3CO)-CHO (CH3CO)-CHO(CH3CO)-CH2O-OCH3+6H2O Conditions: Concentrated sulfuric acid.

Heating, 3,

For example, 1 mol of glucose and 1 mol of ethyl spizoic acid undergo esterification reaction.

The reaction equation is: CH2OH(CHOH)4CHoH + CH3COOH - concentrated sulfuric acid, -CH3COOCH2(CHOH)4CHoB + H2O

1. Glucose does not react with ethanol. Glucose is hexane and the aldehyde group does not react with alcohol.

2. Glucose is the most widely distributed and important monosaccharide in nature, and it is a polyhydroxyaldehyde. Pure glucose is colorless crystals, with a sweet taste but the sweetness does not contain such as sucrose (ordinary people cannot taste sweetness), soluble in water, slightly soluble in ethanol, insoluble in ether. The natural glucose aqueous solution rotates to the right, so the socks belong to the smile"Dextrose"。

Glucose has an important position in the field of biology and is the energy of living cells** and the metabolic intermediate, that is, the main energy supplier of living organisms. Plants can produce grape sugar through photosynthesis. It has a wide range of applications in the field of confectionery manufacturing and medicine.

3. Ethanol is an organic substance, commonly known as alcohol, which is carried by one.

The esterification reaction of ethanol and acetic acid is a reaction catalyzed by acid Qingmeng, which can prepare ethyl acetate, which is detailed as follows:

1. Introduction:

1. Reaction mechanism: When the esterification reaction of acetic acid and ethanol occurs, an acidic catalyst needs to be added to promote the reaction. The most commonly used catalysts are strong acids such as concentrated sulfuric acid or hydrochloric acid. The mechanism of the reaction involves the acid-catalyzed condensation of carboxylic acids and alcohols to produce esters and water.

2. Influencing factors: There are many influencing factors of esterification reaction, including the concentration of acid catalyst, reaction temperature and reaction time, etc., and the molar ratio of acetic acid and ethanol will also have an impact on the effect of the reaction.

3. Process conditions: In the actual production process, the esterification reaction of ethyl acetate can adopt single-stage reaction or multi-stage reaction. Single-stage reactions are generally performed in batches, while multi-stage reactions are achieved by continuous flow.

Process conditions include reactor type, reaction time, reaction temperature, acid catalyst concentration, alkyd molar ratio, etc.

4. Industrial application: Ethyl acetate is a commonly used solvent and chemical intermediate. Its industrial applications are wide, including the preparation of plastics, resins, coatings, paints, fragrances, etc. In addition, ethyl acetate can also be used in dyes, coatings, rubber and other industries.

2. Precautions:

1. Pay attention to the use of solutions: there are many solutions that are very harmful to people's bodies, and many people should know that sulfuric acid is dehydrated, especially concentrated sulfuric acid, and the corrosive effect is extremely strong, so you must be careful when doing this kind of experiment.

2. Pay attention to the use of instruments: many instruments should also be used carefully, for example, the phenomenon of test tubes bursting often occurs, so the heated test tubes must be kept dry.

3. Toxic gas production: many experiments may produce chlorine and other volatile substances, so this experiment must be carried out under ventilation conditions.

4. Pay attention to the dosage: many experiments have strict requirements for the dosage of articles and solutions, and the error is within the allowable or allowable range, just like the analytical balance we used in the previous experiments.