A general term for various salts of vanadate. Vanadium oxide (V) V 2 O 5 is poorly soluble in water, but exists in the form of various hydrates. These are called vanadic acids, with the general formula V 2 O 5 ・ n H 2 O written in the form of the acid. H 3 VO 4 with n = 3 is called orthovanadic acid (not obtainable in the free form), H 4 V 2 O 7 with n = 2 is called di(pyro)vanadic acid, and HVO 3 with n = 1 is called metavanadic acid. And there are vanadates represented by n M 2 O・V 2 O 5 (M is a monovalent cation) corresponding to each vanadate. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
各種バナジン酸の塩の総称。酸化バナジウム(V) V2O5は水に難溶であるが,各種の水和物の形で存在する。これらの一般式V2O5・nH2Oを酸の形式に書いてバナジン酸vanadic acidと呼んでいる。n=3のH3VO4をオルトバナジン酸(遊離では得られない),n=2のH4V2O7を二(ピロ)バナジン酸,n=1のHVO3をメタバナジン酸という。そしてそれぞれのバナジン酸に対応してnM2O・V2O5(Mは1価の陽イオン)で表されるバナジン酸塩が存在する。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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