The IUPAC name for acetic acid is ethanoic acid. It is a colorless liquid with a characteristic vinegar-like odor. It is the simplest carboxylic acid and is the main component of vinegar. It is used in the production of many other chemicals, including plastics, fibers, and pharmaceuticals.
Acetic acid is a weak acid and is only slightly dissociated in water. It is a polar molecule and has a high boiling point. It is miscible with water and most organic solvents.
Acetic acid is a corrosive substance and can cause burns to the skin and eyes. It is also a flammable substance and should be stored in a cool, dry place.
The other options are incorrect because they are not the IUPAC names for acetic acid. Propanoic acid is the IUPAC name for propionic acid, butanoic acid is the IUPAC name for butyric acid, methanoic acid is the IUPAC name for formic acid.