Acid Naming and IUPAC Nomenclature
What is the IUPAC name for H3PO₃ as an acid?
1) Phosphorous acid
2) Hydrophosphoric acid
3) Hydrophosphorous acid
4) Phosphoric acid
5) Hypophosphorous acid
Final answer:
The IUPAC name for H3PO₃ as an acid is phosphorous acid.
The IUPAC name for H3PO₃ as an acid is phosphorous acid. It is important to note that H3PO₃ is often referred to using its common name, phosphoric acid. However, according to IUPAC nomenclature, the correct name for this compound is phosphorous acid. This is because the prefix 'phospho-' is used for compounds with a higher oxidation state of phosphorus.