Write the IUPAC name of the structural formulae.
`CH_(3)-CH_(2)-COOH`

Explanation

The number of carbon atoms in the longest chain : 3
Parent alkane : Propane
Functional group : - COOH (-oic acid)
If the carbon chain of the compound contains a -COOH group then change the ending of the parent name, i.e. 'e' of propane is replaced by 'oic acid'.
Parent suffix : Propanoic acid
IUPAC name : Propanoic acid .