Question

Write the common name and IUPAC name of ${C_2}{H_5}COOH$

Answer 1

The suffix "-oic acid" is allocated to carboxylic acids in IUPAC nomenclature. Because a carboxylic acid group must always be found at the end of a carbon chain, it is always assigned to the first position in numbering and is not required to be included in the name.

Complete answer:
The common name of ${C_2}{H_5}COOH$ is propionic acid or ethane carboxylic acid.
The IUPAC name of ${C_2}{H_5}COOH$ is Propionic acid.
A carboxylic acid's general formula is $R - COOH$, where $COOH$ denotes the carboxyl group and R denotes the rest of the molecule to which this group is linked. There is a carbon in this carboxyl group that has a double bond with an oxygen atom and a single bond with a hydroxyl group.
Methanoic acid ($HCOOH$), ethanoic acid ($C{H_3}COOH$), propanoic acid (${C_2}{H_5}COOH$), and butanoic acid (${C_3}{H_7}COOH$) are the first four carboxylic acids derived from alkanes.

Additional Information:
Physical properties of carboxylic acids
Due to the existence of two electronegative oxygen atoms, carboxylic acid molecules are polar.
Due to the presence of the carbonyl group ($C = O$) and the hydroxyl group, they also participate in hydrogen bonding.
These compounds form dimers when put in nonpolar liquids due to hydrogen bonding between the hydroxyl group of one carboxylic acid and the carbonyl group of the other.
The solubility of carboxyl functional group-containing compounds in water is proportional to their size. The higher the solubility, the smaller the compound (the shorter the $R$ group).
A carboxylic acid's boiling point is usually greater than that of water.

Note:
$C = O$ contains the most significant functional group, carboxylic acids. Some carboxylic acids, such as citric acid, lactic acid, or fumaric acid, are created via fermentation, and the majority of these carboxylic acids are used in the food business.