| 单词 | molybdic acid |
| 释义 | > as lemmasmolybdic acid molybdic acid n. [after French acide molybdique (Fourcroy Élémens d'hist. naturelle et de chim. (ed. 2, 1786) II. 325)] a parent acid of molybdates; spec. either of two hydrated forms of molybdenum trioxide, H2MoO4 and H4MoO5, obtained from acid solutions of molybdates. ΚΠ 1788 J. St. John tr. L. B. Guyton de Morveau et al. Method Chym. Nomencl. 136 Molybdats, salts formed by the union of the molybdic acid with different bases. 1807 T. Thomson Syst. Chem. (ed. 3) II. 247 The molybdic acid precipitates in the state of a fine white powder. 1856 W. A. Miller Elements Chem. II. 943 Molybdic acid unites with bases, and forms well characterized salts, both neutral and acid. 1938 R. Hum Chem. for Engin. Students xxviii. 777 The most important molybdenum compounds are derived from the trioxide..formed when the disulphide is roasted. This oxide is acidic, giving molybdic acid..which forms a series of salts, of which ammonium molybdate..is the most important. 1984 N. N. Greenwood & A. Earnshaw Chem. of Elements (1986) xxiii. 1176 If these solutions are made strongly acid, precipitates of yellow ‘molybdic acid’, MoO3.2H2O, or white ‘tungstic acid’, WO3.2H2O are obtained. < as lemmas |
| 随便看 |
|
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。