What Are Acid-Base Reactions?

In the acid-base ionization theory, the definition of acid-base is: Any substance whose cations ionized in an aqueous solution are all H ⁺ is called an acid; substances whose ionized anions are all OH ^- are called a base. The nature of the acid-base reaction is a reaction in which H ⁺ and OH- combine to form water. The acidity and alkalinity of an aqueous solution are measured by the concentration of hydroxide ions and hydroxide ions in the solution, that is, the greater the concentration of hydrogen ions, the stronger the acidity; the greater the concentration of hydroxide ions, the stronger the alkalinity. When the concentration of one of the hydrogen ion or hydroxide ion increases, the concentration of the other inevitably decreases, and the acid and the base are opposite. The pH value is expressed by PH value, pH = 7 is neutral, the lower the pH, the stronger the acidity of the solution; the higher the pH, the stronger the alkalinity of the solution. The acid-base ionization theory states that various acids and bases are not necessarily the same, and some reach more than 90% and some only 1%.