Senior high school chemistry lists common monobasic acids, dibasic acids and polybasic acids, and then talks about some basic knowledge of these.

Monobasic acids are acids with only one hydrogen ion in the molecule, such as nitric acid. Similarly, dibasic acids are acids with two hydrogen ions in the molecule, such as H2SO4 tribasic acids (such as H3PO4), quaternary acids (such as H4P2O7) and pentabasic acids (such as H5IO6).

Inorganic acid, also called inorganic acid, is the general name of acids in inorganic compounds. Generally speaking, inorganic acids are inorganic compounds that can dissociate hydrogen ions. Inorganic acids can be divided into oxygen-containing acids, anaerobic acids, complex acids, mixed acids, superacid and so on. According to the degree of dissociation, it can be divided into strong acid and weak acid, and according to the number of ionizable hydrogen ions in the molecule, it can also be divided into monobasic acid, dibasic acid and polybasic acid. Inorganic acids are mainly used to provide hydrogen ions.