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In aqueous solution tellurate ions are 6 coordinate. In neutral conditions the pentahydrogen orthotellurate ion, H 5 TeO − 6, is the most common; in basic conditions, the tetrahydrogen orthotellurate ion, H 4 TeO 2− 6, and in acid conditions, orthotelluric acid, Te(OH) 6 or H 6 TeO 6 is formed. [8]
A tellurite tellurate is a chemical compound or salt that contains tellurite and tellurate anions [TeO 3] 2-[TeO 4] 2-. These are mixed anion compounds , meaning the compounds are cations that contain one or more anions.
Tellurite is a oxyanion of tellurium with the formula TeO 2− 3.It is the ion of tellurous acid, and is chemically related to tellurium dioxide (TeO 2), whose mineral appearance also bears the name tellurite.
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. [ 4 ] [ 5 ] It is used as tellurium-source in the synthesis of oxidation catalysts.
3 ion. Oxidation of its aqueous solution with hydrogen peroxide gives the tellurate ion. It is usually prepared as an aqueous solution where it acts as a weak acid. [1] [3] H 2 TeO 3 + H 2 O ⇌ H 3 O + + HTeO − 3 K a1 = 2 × 10 −3 HTeO − 3 + H 2 O ⇌ H 3 O + + TeO 2− 3 K a2 = 1 × 10 −8
The telluride ion is the anion Te 2− and its derivatives. It is analogous to the other chalcogenide anions, the lighter O 2−, S 2−, and Se 2−, and the heavier Po 2−. [1] In principle, Te 2− is formed by the two-e − reduction of tellurium. The redox potential is −1.14 V. [2] Te(s) + 2 e − ↔ Te 2−
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Tellurate minerals contain a tellurate anion, either metatellurate (TeO 2 ...