Carboxylic acids

Definition: Are organic compounds containing a carboxyl group attached to it.

Least organic compound: Methanoic acid COOH

Functional group:

R - C = O

O

Physical properties: The boiling points of carboxylic acids of similar size are higher still. The reason for the solubility is that although aldehydes and ketones can't hydrogen bonds with themselves, they can hydrogen bond with water molecules. The carboxylic acids with up to four carbon atoms will mix with water in any proportion.

IUPAC name	Molecular weight	Boiling point	Formula
Butane	58	0	CH3CH3CH2CH3
Propanol	60	97	CH3CH2CH2OH
Ethylmetherether	60	6	CH3-O-CH2CH3
Propanal	58	49	CH3CH2CH=O
Propanoic acid	60	118	CH3CH2COOH