Acetic acid chemical formula, how to write the chemical formula of acetic acid?

The chemical formula of acetic acid is CH3COOH.

Structure In solid acetic acid, molecules form chains, and individual molecules are connected to each other by hydrogen bonds. In vapor of 120 (248), dimers can be detected. Dimers are also present in the liquid phase of dilute solutions of non-hydrogen-bonded solvents, to some extent in pure acetic acid, but are destroyed by hydrogen-bonded solvents.

The enthalpy of dissociation of dimers is estimated to be kilojoules mol. Other carboxylic acids also have similar intermolecular hydrogen bond interactions.

role

Acetic acid can be used as an acidity regulator, acidifier, pickling agent, flavor enhancer, spice, etc. It is also a good antimicrobial agent, mainly due to its ability to reduce the pH below the pH required for optimal microbial growth. Acetic acid is the earliest and most used acidulant in China, mainly used for compound seasonings, preparation of wax, canned food, cheese, jelly, etc.

When used for seasonings, acetic acid can be diluted to a 4% 5% solution with water and then added to various seasonings. Beverages made with vinegar as an acidulant and supplemented by pure natural nutritional health products are called international third-generation beverages.

Chemical formula CH3COOH.

Acetic acid is widely distributed in nature, for example in fruits or vegetable oils, but is mainly found in the form of esters. It is found in the tissues of animals, in excretions, and in the blood in the form of free acids. Many microorganisms can convert different organic matter into acetic acid through fermentation.

Acetic acid is the main ingredient in vinegar, which has been used throughout almost the entire history of human civilization.

Chemical properties of acetic acid:

The carboxyl hydrogen atom of acetic acid can be partially ionized into hydrogen ions (protons) and released, resulting in the acidity of carboxylic acid. Acetic acid is a single weak acid in aqueous solution, the acidity coefficient is, pka=, and the pH of the acetic acid solution with a concentration of 1mol L (similar to the concentration of household vinegar) is, that is, only the acetic acid molecule is dissociated.

The crystal structure of acetic acid shows that the molecules are bound into dimers (also known as dijunctions) by hydrogen bonds, and dimers are also present in the vapor state of 120.

Dimers have high stability, and have been proven by freezing point reduction molecular weight determination and X-ray diffraction to prove that carboxylic acids with small molecular weights such as formic acid, acetic acid, and even gaseous states exist in the form of dimers in solid and liquid states. When acetic acid is dissolved in water, the hydrogen bonds between the dimers will be broken very quickly. Other carboxylic acids have a similar dimerization phenomenon.

The chemical name of vinegar is acetic acid, the molecular formula is CH3COOH, and the main components of edible vinegar are water and acetic acid and some trace elements.

China's famous vinegars include "Mysterious Xiangxi" original balsamic vinegar, Zhenjiang balsamic vinegar, Shanxi old vinegar, Baoning vinegar, Tianjin Duliu old vinegar, Fujian Yongchun old vinegar, Guangling debuted fort vinegar, Qishan vinegar, Henan old turtle Yite vinegar and red yeast rice vinegar. Drinking vinegar regularly can play a role in eliminating fatigue, and vinegar can also relieve complications caused by colds.

Acetic acid, also known as acetic acid, is composed of two carbon atoms, four hydrogen atoms and two oxygen atoms, and the molecular formula is: C2

H4O2, structural formula. , the electronic formula is <>, and the structure is simplified: CH3

cooh, functional group is: -cooh

So the answer is: C2H4O2

<>ch3cooh；-cooh．

ch3cooh

h2och3coo-

H3O + acetic acid, water, acetate ion, hydronium hydrate.

Note: The above equal signs should be changed to reversible signs, because acetic acid is a weak acid, its ionization is not very complete, and there are still acetic acid molecules in the aqueous solution.

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