IUPAC Nomeclature of Acids

Valeric acid has IUPAC Nomenclature as :

IUPAC Nomenclature OF Ester Group|| Acid derivatives||Cyanides||Thiols Group

Organic Chemistry - Millions Of Organic Compounds|IUPAC Nomeclature|The IUPAC Naming For Branched Alkanes|Parts Of IUPAC Name|Rules For IUPAC Nomenclature|OMR

IUPAC Nomenclature OF Carboxylic Acid|| Carboxylic Acid Anhydride Functional Group

IUPAC : nomenclature OF compounds with functional group,carboxylic acid,cyanides,acid halides

As per IUPAC nomeclature , the name of the complex [Co(H_2O)_4(NH_3)_2]Cl_3 is ________.

Which group is always used as substitudent in the IUPAC nomeclature ?

The correct IUPAC name of the acid is