oxyacid n : any acid that contains oxygen [syn: oxygen acid]
- Italian: ossiacido
An oxoacid is an acid which contains oxygen. More specifically, it is an acid which:
Under Lavoisier's original theory, all acids contained oxygen, which was named from the Greek οξυς (oxys) (acid, sharp) and γεινομαι (geinomai) (engender). It was later discovered that some acids, notably hydrochloric acid, did not contain oxygen and so a distinction was made for those that did.
Common oxoacids include:
Common acids which are not oxoacids include:
Although carboxylic acids fulfill the criteria above, they are not generally considered as oxoacids.
All oxoacids have the acidic hydrogen bound to an oxygen atom, so bond strength (length) is not a factor as it is with binary nonmetal hydrides. Rather, the electronegativity of the central atom (E) and the number of O atoms determine oxoacid acidity. With the same central atom E, acid strength increases as the number of oxygen attached to E increases. With the same number of oxygens around E, acid strength increases with the electronegativity of E.
- IUPAC definition of "oxoacid" (from the "Gold Book")
oxyacid in Estonian: Hapnikhapped
oxyacid in Spanish: Ácido oxácido
oxyacid in French: Oxoacide
oxyacid in Korean: 산소산
oxyacid in Italian: Ossiacidi
oxyacid in Japanese: オキソ酸
oxyacid in Portuguese: Oxiácido
oxyacid in Chinese: 含氧酸