Acetic Acid - C2H4O2

What is Acetic Acid?

Acetic Acid is a monocarboxylic acid with a chemical formula C2H4O2. It is also known as Methanecarboxylic acid or Ethanoic acid. This organic compound consists of a carboxyl group attached to a methyl group and is a colorless liquid with a pungent smell. The carboxylic acid group is the functional group of acetic acid. It partially dissociates in water, therefore, it is said to be a weak acid. Acetic acid was synthesized for the first time by German chemist Hermann Kolbe in the year 1845. Another name for water-free acetic acid is glacial acetic acid. The PH of 1 mM of acetic acid is about 3.91.

Properties of Acetic Acid – C2H4O2

C2H4O2 Acetic Acid
Molecular Weight/ Molar Mass 60.05 g/mol
Density 1.05 g/cm³
Boiling Point 118 to 119 °C
Melting Point 16 to 17 °C

Acetic Acid structure – C2H4O2

Acetic Acid structure

C2H4O2 Uses (Acetic Acid)

  • It is used as an antiseptic
  • It is used in the manufacture of rayon fiber
  • Injecting acetic acid in tumor helps in the treatment of cancer
  • It is used in the pickling of vegetables
  • Vinyl acetate monomer is produced with the help of acetic acid
  • It is used in the manufacture of rubber
  • It is the main component of vinegar
  • It is used in the manufacture of perfumes
  • It is used as a preservative

Also Read:

Learn more about the structure and properties of C2H4O2 from the expert faculties at BYJU’S.

Practise This Question

Identify the least stable ion among the following.