单词 | oxyacid |
释义 | oxyacidn. Chemistry. 1. An inorganic acid whose molecules contain oxygen, such as sulphuric or nitric acid. ΘΚΠ the world > matter > chemistry > chemical substances > acids > [noun] > acids-named > containing oxygen or oxy-acids oxyacid1834 oxygen acid1842 the world > matter > chemistry > organic chemistry > organic acids > [noun] > aromatic acids oxyacid1869 1834 Philos. Trans. (Royal Soc.) 124 438 If for the oxyacid a hydracid be substituted,—as one analogous to the muriatic, for instance,—then the state of things changes. 1854 J. Scoffern in Orr's Circle Sci., Chem. 352 The attempt to assimilate oxyacid salts with the type of hydracid salts. 1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) vi. 66 All acids contain hydrogen, combined either with an element, or with a group of elements, which almost always contains oxygen, and in this case the substances are termed oxi-acids. 1957 G. E. Hutchinson Treat. Limnol. I. xiii. 754 Using sulfate as a hydrogen acceptor in metabolic oxidation in the same way that nitrate- and nitrite-reducing bacteria..use these oxyacid anions in the absence of the free oxygen. 1962 F. A. Cotton & G. Wilkinson Adv. Inorg. Chem. v. 136 Many metal ions whose solutions are acidic may be regarded as oxy acids. 1973 J. J. Lagowski Mod. Inorg. Chem. vii. 205 The magnitude of the pKa values of the oxyacids depends only on the value of n in the general formulation (HO)mXOn. 2. An organic compound whose molecules contain a carboxyl group and one or more hydroxyl groups. Now rare. ΚΠ 1877 H. Watts Fownes's Man. Elem. Chem. (ed. 12) II. 534 These aromatic oxy-acids, like the corresponding acids of the fatty series (the lactic acids), exhibit alcoholic as well as acid characters. 1885 I. Remsen Introd. Study Compounds Carbon 155 The first class which presents itself is that of the alcohol acids or acid alcohols; that is, substances which combine within themselves the properties of both alcohols and acids. They are commonly called oxy-acids or hydroxy-acids. 1943 Chem. Rev. 32 86 Oxygen acids are often called oxy acids, a term which is also used for hydroxy acids in organic chemistry. This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022). < |
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