Oxoacids (and its variants oxyacids, @O04376@, oxy-acids, oxiacids, oxacids) is a traditional name for any acid having oxygen in the acidic group. The term stands in contradistinction to `hydracids' (e.g. HCl) lacking oxygen. The term oxoacid now refers to a compound which contains oxygen, at least one other element, and at least one hydrogen bound to oxygen, and which produces a conjugate base by loss of positive hydrogen ion(s) (hydrons). E.g. P(OH)3, RC(=O)OH, HOSOH, HOCl, HON=O, (HO)2SO2 , RP(=O)(OH)2.
See also:
oxo carboxylic acids
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1355 [Terms] [Paper]
Red Book, 3rd ed., p. 123 [Terms] [Book]