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Copper is a chemical element with the symbol Cu (from Latin: cuprum) and the atomic number of 29. It is easily recognisable, due to its distinct red-orange color.Copper also has a range of different organic and inorganic salts, having varying oxidation states ranging from (0,I) to (III).
Copper(I) iodide can be prepared by heating iodine and copper in concentrated hydroiodic acid. [9] In the laboratory however, copper(I) iodide is prepared by simply mixing an aqueous solution of potassium iodide and a soluble copper(II) salt such as copper(II) sulfate. [4] 2 Cu 2+ + 4 I − → 2 CuI + I 2
Among the numerous copper sulfides, important examples include copper(I) sulfide and copper(II) sulfide. [citation needed] Cuprous halides with fluorine, chlorine, bromine, and iodine are known, as are cupric halides with fluorine, chlorine, and bromine. Attempts to prepare copper(II) iodide yield only copper(I) iodide and iodine. [1]
The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.
Many other oxyanions form complexes; these include copper(II) acetate, copper(II) nitrate, and copper(II) carbonate. Copper(II) sulfate forms a blue crystalline pentahydrate, the most familiar copper compound in the laboratory. It is used in a fungicide called the Bordeaux mixture. [67] Ball-and-stick model of the complex [Cu(NH 3) 4 (H 2 O) 2 ...
Substance Formula 0 °C 10 °C 20 °C 30 °C 40 °C 50 °C 60 °C 70 °C 80 °C 90 °C 100 °C Barium acetate: Ba(C 2 H 3 O 2) 2: 58.8: 62: 72: 75: 78.5: 77: 75
Copper(II) borate – Cu 3 (BO 3) 2; Copper(II) carbonate – CuCO 3; Copper(II) chloride – CuCl 2; Copper(II) hydroxide – Cu(OH) 2; Copper(II) nitrate – Cu(NO 3) 2; Copper(II) oxide – CuO; Copper(II) sulfate – CuSO 4; Copper(II) sulfide – CuS; Copper oxychloride – H 3 ClCu 2 O 3 [202] Tetramminecopper(II) sulfate – [Cu(NH 3) 4]SO 4
Copper(II) oxide or cupric oxide is an inorganic compound with the formula CuO. A black solid, it is one of the two stable oxides of copper, the other being Cu 2 O or copper(I) oxide (cuprous oxide). As a mineral, it is known as tenorite, or sometimes black copper.