The ion with the formula C2H3O2 is called the acetate ion.
Acetate is derived from acetic acid, which is commonly found in vinegar. When acetic acid loses a hydrogen ion (H+), it forms the acetate ion. The chemical structure of the acetate ion consists of two carbon atoms (C), three hydrogen atoms (H), and two oxygen atoms (O). The formula C2H3O2 indicates its composition and shows that it carries a negative charge, making it an anion. Acetate ions are commonly encountered in various chemical reactions and biological processes and are an important part of organic chemistry.