Gourt Home::Gourt :: Copper(II) oxide
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| Systematic name | } |
| Other names | cupric oxide |
| Molecular formula | CuO |
| Molar mass | } g/mol |
| CAS number | * |
| Density | } g/cm3 |
| Solubility (water) | } g/l |
| Melting point | 1200 °C + |
| Boiling point | } °C |
| Chemical infobox | |
Copper(II) oxide or cupric oxide (CuO) is the higher oxide of copper. It is a black solid with an ionic structure which melts above 1200 °C with some loss of oxygen. It can be formed by heating copper in air, but in this case it is formed along with copper(I) oxide; thus, it is better prepared by heating copper(II) nitrate, copper(II) hydroxide or copper(II) carbonate:
CuCO3 → CuO + CO2
Copper(II) oxide is a basic oxide, so it dissolves in mineral acids such as hydrochloric acid, Sulfuric acid or nitric acid to give the corresponding copper(II) salts:
CuO + 2 HNO3 → Cu(NO3)2 + H2O
It can also be reduced to copper metal using hydrogen or carbon monoxide:
H2 + CuO → Cu + H2O
See also
External links
Oxides | Copper compounds | Semiconductor materials
Oxid měďnatý | Kobber(II)oxid | Kupfer(II)-oxid | 酸化銅(II) | Oxid meďnatý | Ôxít đồng (II)
"Copper(II) oxide"