Physical Properties
Carboxylic Acid of Class 12
Some important physical properties of carboxylic acids are given below,
1. Solubility
As the size of the alkyl group increases, the solubility of the acid decreases and polarity is reduced.
2. Boiling points
Due to intramolecular hydrogen bonding dimerization of acid takes place and boiling point of carboxylic acid is higher than expected.
3. Melting points
The melting points of aliphatic carboxylic acids do not show a regular pattern. The first ten members show a alteration effect, i.e. the melting point of an acid containing even number of carbon atoms is higher than the next lower and next higher homologues containing odd number of carbon atoms.
