Unfortunately, real chemistry does not recognize the compound CuO2. CuO is the official chemical compound of copper (II) oxide, a black solid. Copper (II) oxide has the chemical formula CuO. In this compound, copper has a chemical state of +2.
Copper (II) oxide is a black solid. It is odorless and has a high melting point of around 1326 °C. Its molecular structure includes a copper (II) ion and an oxide ion.
In chemical reactions, CuO can react with strong acids such as hydrochloric acid or sulfuric acid to form the corresponding copper salts and water. It can also react with metals such as aluminum or zinc to form metallic copper and the corresponding metal oxides.
In the laboratory, CuO can be prepared by heating copper (II) nitrate or copper (II) carbonate. On an industrial scale, it is usually produced from the desulfurization of copper sulfide or from the oxidation of metallic copper in air.