H₂SO₃

Definition

H₂SO₃ refers to sulfurous acid, which is formed when sulfur dioxide dissolves in water. Its formula indicates that there are two hydrogen atoms (H), one sulfur atom (S), and three oxygen atoms (O).

Related terms

Acid:

A substance that donates protons (H+) or accepts pairs of electrons.

Molecule:

A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound.

Chemical Formula: A shorthand notation that uses symbols and numbers to represent the types and proportions of atoms in a compound.