What rule is observed when naming an oxyacid that does have oxygen in its formula?

Anion name and Acid name

Formula Anion Anion name Acid Name

HF F - is fluoride hydrofluoric acid

HCl Cl - is chloride hydrochloric acid

HBr Br - is bromide hydrobromic acid

HI I

- is iodide hydroiodic acid

H2S S2 - is sulfide hydrosulfic acid

HNO2 NO2 is nitrite nitrous acid

HNO3 NO3

-

is nitrate nitric acid

HC2H3O2 C2H3O2

-

is acetate acetic acid

H2SO4 SO4

2 - is sulfate sulfuric acid

H2CO3 CO3

2 - is carbonate carbonic acid

H3PO4 PO4

3 - is phosphate phosphoric acid

HClO ClO¯ is hypoclorite hypochlorous acid

HClO2 ClO2¯ is chlorite chlorous acid

HClO3 ClO3¯ is chlorate chloric acid

HClO4 ClO4¯ is perchlorate perchloric acid

HIO3 IO3¯ is iodate iodic acid

HNO2 NO2¯ is nitrite nitrous acid

H2SO3 SO3

2 - is sulfite sulforous acid

HCN CN is cyanide hydrocyanic acid

An oxyacid with two less oxygen atoms than the (root) ic acid is named by writing hypo-, then the root of the name for the element other than hydrogen and oxygen, then - ous, and then acid. Therefore, HClO, is hypochlorous acid