What is difference between CuO and Cu2O

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What is the difference between CuO and Cu2O?

CuO is copper oxide, and Cu2O is cuprous oxide. Copper oxide is insoluble in water and ethanol, soluble in acid, ammonium chloride and potassium cyanide solution, slowly soluble in ammonia solution, and can react with a strong alkali. Copper oxide is mainly used to make rayon, ceramics, glazes and enamels, batteries, petroleum desulfurizes, pesticides, hydrogen production, catalysts, green glass and so on. Cuprous oxide is an oxide of univalent copper, a bright red powdery solid, which is almost insoluble in water. It is disproportionated into bivalent copper and simple copper substance in an acidic solution and gradually oxidized into black copper oxide in wet air. Cuprous oxide is mainly used in the manufacture of antifouling paints and pesticides for ship bottoms, as well as various copper salts, analytical reagents and red glass, and is also used in the preparation of copper plating and copper plating alloy solutions. 

According to the electronic configuration, copper as an advertising element is named cuprous or copper. The main difference between cuprous and copper is that cuprous is copper +1 cation, and copper is copper +2 cation. When copper reacts with oxygen, two stable compounds Cu2O and CuO, are formed. In this form, Cu is in the form of Cu+2, and the electronic configuration of Cu is changed from [Ar] 3d104s1 to [Ar] 3d94s0. Copper oxide is an inorganic compound with the chemical formula CuO (also called "copper oxide"). It is called ten stone mineral. CuO can be obtained by using the pyrometallurgical method.


In this form, Cu is Cu+1. Its electronic configuration changes from [Ar] 3d104s1 to [Ar] 3d104s0, so it is another stable compound of copper with the molecular formula Cu2O. II) The classification is more stable. CuO (Figure 3) is usually obtained by the oxidation of copper, which can be yellow or red. Cu2O will degrade into CuO in penetrating air. The product is a toxic compound. If the content of the product exposed to air is 0.22-14mg/mg3, it will cause acute poisoning if it is exposed to air for 1-2 hours. Differences between copper oxide (CuO) and cuprous oxide (Cu2O) nanopowders In terms of structure, copper oxide has a monoclinic crystal structure, in which Cu is coordinated by four oxygen atoms, while cuprous oxide has a cubic structure, in which Cu atoms are located in FCC sublattice and oxygen atoms are located in BCC sublattice. Solid Cu2O has antiferromagnetism, while CuO has antiferromagnetic order. Both of them are P-type semiconductors, but the band gap of Cu2O is 2eV, while that of CuO is 1.2ev–1.9ev. Cu2O is obtained by the oxidation of the copper metal or reduction of copper (II) solution with sulfur oxide, while CuO is obtained by the pyrometallurgical method of extracting copper from ore.


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