Hydrogen telluride
(Redirected from Hydrotelluric acid)
| |||
| Names | |||
|---|---|---|---|
| IUPAC name
hydrogen telluride
| |||
| Other names
hydrotelluric acid
tellane tellurium hydride | |||
| Identifiers | |||
| ECHA InfoCard | 100.029.073 | ||
PubChem CID
|
|||
CompTox Dashboard (EPA)
|
|||
| Properties | |||
| H2Te | |||
| Molar mass | 129.6158 g mol−1 | ||
| Appearance | colourless gas | ||
| Density | 3.310 g/cm3, gas 2.57 g/cm3 (-20 °C, liquid) | ||
| Melting point | −49 °C (224 K) ( [1] | ||
| Boiling point | −2.2 °C (271.8 K)(unstable above -2 °C) | ||
| 0.70 g/100 mL | |||
| Acidity (pKa) | 2.6 | ||
| Structure | |||
| bent | |||
| Thermochemistry | |||
| Std enthalpy of formation ΔfH |
0.7684 kJ/g | ||
| Hazards | |||
| Main hazards | toxic | ||
| Related compounds | |||
| Other anions | H2O H2S H2Se H2Po | ||
| Other cations | Na2Te Ag2Te | ||
| Related compounds | telluric acid tellurous acid | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |||
| Infobox references | |||
Hydrogen telluride, also known as hydrotelluric acid, tellane, or tellurium hydride, is a chemical compound. It is also an acid. Its chemical formula is H2Te. It contains hydrogen and telluride ions.
Properties
[change | change source]Hydrogen telluride is a toxic reactive gas. It easily decomposes to hydrogen and tellurium. It also burns in air to make tellurium dioxide and water. It has a very bad smell of decayed garlic. It is almost as acidic as phosphoric acid. It reacts with some metals and metal oxides to make tellurides.
Preparation
[change | change source]It is made by adding a strong acid to a telluride, such as sodium telluride.
Uses
[change | change source]Hydrogen telluride does not have many uses because it is very toxic and unstable.
Related pages
[change | change source]Sources
[change | change source]- ↑ Lide, David R., ed. (2006). CRC Handbook of Chemistry and Physics (87th ed.). Boca Raton, FL: CRC Press. ISBN 0-8493-0487-3.