The reaction between barium hydroxide and acetic acid
There must be a reason to taste the sympathies of all kinds of substances. Now on the encounter between barium hydroxide and acetic acid (Acetic Acid).

Barium hydroxide, which belongs to the alkali, can dissociate hydroxide ions in water, and has the general nature of alkali. Acetic acid, a weak acid, is partially ionized in the solution and is acidic. When the two meet, it is like the intersection of yin and yang, resulting in a neutralization.

When the two are mixed, the hydrogen ion of acetic acid and the hydroxide ion of barium hydroxide attract each other, such as magnetic attraction, and combine into water. Acetate ion and barium ion exist in the solution. The formula for the chemical reaction is as follows: $Ba (OH) _2 + 2CH_3COOH\ longrightarrow Ba (CH_3COO) _2 + 2H_2O $.

Looking at this reaction, at the beginning, the concentration of ions in the solution changes due to the reaction. The ionization equilibrium of acetic acid shifts to the right due to the consumption of hydrogen ions, and hydrogen ions are continuously released to meet the needs of the reaction. The ionization of barium hydroxide also continues due to the reduction of hydroxide ions.

After the reaction is completed, the properties of the solution are also different from the original. If the two react exactly in a stoichiometric ratio, a solution of barium acetate is obtained. Although barium acetate is a salt, the solution is slightly alkaline due to the hydrolysis of acetate ions.

This change is not only the transformation of matter, but also the movement of ions and the balance. Looking at the microscopic changes, we can see the macroscopic picture. The wonders of chemistry can be seen here. The symmetry of matter, in accordance with the laws, becomes the change of all phenomena, which is really the interest of nature.