Illustrated Glossary of Organic Chemistry

Acetic acid (Ethanoic acid; HOAc; AcOH): A nonpolar (ε = 6.2) protic solvent and moderately weak acid (pKa = 4.78) of molecular formula C2H4O2. IUPAC name ethanoic acid. Vinegar is an aqueous solution of acetic acid, usually with many other minor components as well.

Molecular Structure of Acetic Acid

Lewis structure
Ball and spoke
Space-filling model
Molecular model kit