Copper (II) oxide, also known as cupric oxide or the mineral tenorite, is an inorganic compound supplied as precursor or raw material in the production of chemical assets that save copper.
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Formula and structure: Copper (II) sulfate chemistry formula is CuO and its molar fixed is 79.55 g mol-1. The molecule is created by one Cu2+ cation bond to a oxygen anion O2-. The cystral structure is a monoclinic crystal system with a copper atom coordinated by 4 oxygen ions. Its chemistry structure deserve to be composed as below, in the common representations used for necessary molecules.
Occurrence: Copper (II) oxide is found in nature together being part of the mineral tenorite and it is extracted v the traditional mining techniques.
Preparation: return copper (II) oxide have the right to be uncovered in nature, it is not extracted in a large scale, therefore that industrial synthesis the this compound is required. The CuO is prepared through the reaction of copper metal and also oxygen gas at high temperature >500 °C:
2 Cu + O2 → 2 CuO
Physical properties: Copper (II) oxide is a black color to dark brown powder. The oxide thickness is 6.31 g mL-1. The melting suggest is 1326 °C , if the boiling point is 2000 °C. It is not soluble in water, although it is soluble in ammonium chloride and also potassium cyanide solutions. That is likewise insoluble in ethanol.
Chemical properties: as result of the volume of copper (II) oxide to act together an oxidizing agent, it deserve to be offered in the treatment of hazardous products as the really toxic cyanide or halogenated hydrocarbons. The residual water of the reactions, that incorporate copper metal, have the right to be getting rid of in a safe way. The main reactions are:
C6H5OH + 14CuO → 6CO2 + 3H2O + 14Cu
C6Cl5OH + 2H2O + 9CuO → 6CO2 + 5HCl + 9Cu
Uses: Cupric oxide is offered in the manufacturing of copper salts as the copper sulfates or copper nitrates. That is provided in the manufacturing of dyes, pigments and also paints because of the properties blue and green color linked with the Cu2+ cation. The is also used in some batteries together the lithium-copper batteries.
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Health effects / security hazards: Copper (II) oxide is not toxic to humans and also animals in short concentration. In some cases, it can be found in water. Yet in high concentration, it deserve to be toxicity for the aquatic life. It have the right to explode when heated v with powdered aluminum, anilinium perchlorate, hydrogen or magnesium.