Gold(III) oxide
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| Gold(III) oxide | |
|---|---|
| IUPAC name | Gold(III) oxide |
| Identifiers | |
| CAS number | [1303-58-8] |
| Properties | |
| Molecular formula | Au2O3 |
| Molar mass | 441.93 |
| Appearance | red-brown solid |
| Melting point |
decomposes at 160 °C |
| Solubility in water | insoluble in water, soluble in hydrochloric and nitric acid |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Gold(III) oxide (Au2O3) is the stablest oxide of gold. It is a red-brown, thermally unstable solid that decomposes at 160 °C.[1] The hydrated form is weakly acidic and dissolves in concentrated alkali to form salts that are believed to contain the [Au(OH)4]− ion. [1]
[edit] References
- ^ a b Greenwood, N. N.; Earnshaw, A. (1997). Chemistry of the Elements, 2nd Edition, Oxford:Butterworth-Heinemann. ISBN 0-7506-3365-4.
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