The IUPAC name and common name of HCOOH is :

The IUPAC name of formic acid, represented by the chemical formula HCOOH, is methanoic acid. This nomenclature follows the systematic rules established by IUPAC for naming organic compounds.

IUPAC Naming Rules for HCOOH

1. The compound HCOOH contains a single carbon atom. According to IUPAC nomenclature, the root word "meth" is used for compounds with one carbon atom.
2. The functional group present in HCOOH is the carboxylic acid group (-COOH). For carboxylic acids, the suffix "-oic acid" is applied to the root name of the compound.

Thus, combining these elements, the IUPAC name of formic acid is determined to be methanoic acid.

Common Name of HCOOH

The common name for HCOOH is "formic acid." This name derives from the root "form," which has historically been associated with compounds containing one carbon atom and the carboxylic acid functional group.

Conclusion

In summary, the IUPAC name of formic acid is methanoic acid, and its common name is formic acid. These names are widely recognized in both scientific and academic contexts.