|
|Section2= |Section3= |Section7= |Section8= }} Telluric acid is a chemical compound with the formula Te(OH)6. It is a white solid made up of octahedral Te(OH)6 molecules which persist in aqueous solution. There are two forms, rhombohedral and monoclinic, and both contain octahedral Te(OH)6 molecules. Telluric acid is a weak acid which is dibasic, forming tellurate salts with strong bases and hydrogen tellurate salts with weaker bases or upon hydrolysis of tellurates in water.〔〔Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.〕 ==Preparation== Telluric acid is formed by the oxidation of tellurium or tellurium dioxide with a powerful oxidising agent such as hydrogen peroxide, chromium trioxide or sodium peroxide.〔 :TeO2 + H2O2 + 2H2O → Te(OH)6 Crystallization of telluric acid solutions below 10 °C gives Te(OH)6.4H2O.〔 It is oxidizing, as shown by the electrode potential for the reaction below, although it is kinetically slow in its oxidations.〔 :H6TeO6 + 2H+ + 2e− (unicode:⇌) TeO2 + 4H2O ''E'' Chlorine, by comparison, is +1.36V and selenous acid is +0.74V in oxidizing conditions. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Telluric acid」の詳細全文を読む スポンサード リンク
|