| Tellurous acid | |
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Tellurous acid |
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Other names
Tellurium dioxide hydrate, tellurium(IV) oxide hydrate |
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| Identifiers | |
| CAS number | 10049-23-7 |
| PubChem | 24936 |
| ChemSpider | 23310 |
| ChEBI | CHEBI:30465 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | H2TeO3 |
| Molar mass | 177.616 grams |
| Density | ~ 3 g/cm3 |
| Boiling point |
decomp. |
| Acidity (pKa) | 10-3 |
| Structure | |
| Crystal structure | unknown |
| Molecular shape | pyramidal at Te |
| Related compounds | |
| Other anions | Selenous acid Sulfurous acid |
| Other cations | Sodium tellurite |
| Related compounds | Telluric acid Selenic acid Sulfuric acid |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Tellurous acid is an inorganic compound with the formula H2TeO3. It is the oxoacid of tellurium(IV).[1] The compound is not well characterized. An alternative way of writing its formula is (HO)2TeO. In principle, tellurous acid would form by treatment of tellurium dioxide with water, i.e. hydrolysis. The related conjugate base is well known in the form of several salts such as potassium acid tellurite, KHTeO3.
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