Telluric acid
Telluric acid is a chemical compound. It is an acid. Its chemical formula is H6TeO6. It contains hydrogen and tellurate ions. It contains the TeO66- form of the tellurate ion.
| Telluric acid | |
|---|---|
| |
| |
| IUPAC name | Hexahydroxidotellurium |
| Other names | Orthotelluric acid |
| Identifiers | |
| CAS number | |
| PubChem | |
| ChEBI | CHEBI:30463 |
| SMILES | O[Te](O)(O)(O)(O)O |
| Properties | |
| Molecular formula | H6O6Te |
| Molar mass | 229.64 g/mol |
| Appearance | White monoclinic crystals |
| Density | 3.07 g/cm3 |
| Melting point |
136°C (409.15 K) |
| Solubility in water | 50.1 g/100 ml at 30°C[1] |
| Acidity (pKa) | 7.68, 11.0 at 18°C[1] |
| Structure | |
| Molecular shape | octahedral |
| Dipole moment | 0 D |
| Hazards | |
| Main hazards | corrosive |
| Related compounds | |
| Other anions | hydrotelluric acid tellurous acid hydrogen telluride |
| Related compounds | Teflic acid, Sulfuric acid Selenic acid |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Telluric acid is a weak acid. It reacts with strong bases to make tellurates. It is a powerful oxidizing agents. It can be dehydrated to make tellurium trioxide. The metatelluric acid, H2TeO4, does not exist.
Telluric acid can be made by reacting tellurium dioxide with chromium trioxide or hydrogen peroxide.
It is used to make other tellurates such as sodium tellurate.
Related pages
Sources
- ↑ 1.0 1.1 Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, ISBN 0-8493-0594-2
