Acid classification as to the presence or absence of oxygen in its molecule

Depending on their composition, we can classify the acids into:


There are acids that have the oxygen element in its composition, such as nitric acid (HNO)3) and sulfuric acid (H2ONLY4), substances widely used in the chemical industry. These acids are called oxyacids.


They are acids that do not have the oxygen element in its composition. We can mention hydrochloric acid (HCl) present in our stomach and hydrogen sulfide gas (H2S), a toxic gas produced in certain chemical reactions.

The acids in our daily lives

In our daily lives, we are in contact with various acidic substances: citric acid, a component of various sour-tasting fruits, such as lemon; acetic acid, present in vinegar, carbonic acid, present in soft drinks and gaseous mineral waters, phosphoric acid, present in soft drinks based on glue and some medicines that have acetylsalicylic acid (AAS) in its formulation.