Copper (II) chloride, likewise known together cupric chloride, is a inorganic salt offered as catalysts in chemical synthesis and also is also used in the manufacturing of pyrotechniques for its blue/green colors.
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Formula and structure: Copper (II) chloride chemical formula is CuCl2 and also the molar fixed is 134.45 g mol-1. The dehydrated type has a molecular mass of 170.48 g mol-1. The framework of the anhydrous salt is formed by one cation Cu2+ and also two anion Cl-. The structure is a distorted octahedron with a copper cation tied to 6 chloride anions. In this dehydrated form, the is created by a Cu2+ focused atom, surrounded by 2 water molecules and also two chlorine anions Cl-. Its chemical structure have the right to be created as below, in the usual representations supplied for necessary molecules.
Occurrence: Copper (II) chloride, in that is anhydrous or dehydrate forms, is found in some rare minerals as tolbachite and also eriochalcite. This minerals room mostly found in fumaroles.
Preparation: Copper chloride is prepared from the reaction that metallic copper through chlorine:
Cu + Cl2 + 2 H2O → CuCl2
Copper (II) chloride can also be obtained by the reaction that copper (II) hydroxide or copper (II) carbonate through hydrochloric acid:
Cu(OH)2 + 2HCl → CuCl2 + 2 H2O
Physical properties: Copper (II) chloride is a blue-green solid once dehydrated and also a yellow-brown solid once anhydrous. Copper (II) chloride thickness are 3.38 and also 2.51 g mL-1for the anhydrous and dehydrate forms. The melting point of the anhydrous salt is 498 °C and above 993 ºC the anhydrous salt decomposes. Copper (II) chloride is dissolve in water, ethanol, methanol and acetone.
Chemical properties: Copper (II) chloride can suffer a diverse selection of reaction, which make it functional to usage in different application in chemical industry or chemical synthesis:
It have the right to suffer a redox reaction in the visibility of a reductant. The created compounds include metallic copper or cuprous salt:
2 CuCl2 + SO2 + 2 H2O → 2 CuCl + 2 HCl + H 2SO4
With bases, copper (II) chloride deserve to suffer a instead of to type copper (II) hydroxide:
CuCl2 + 2 NaOH → Cu(OH)2 + 2 NaCl
Uses: Copper (II) chloride deserve to be provided as a catalyst together with other chloride salts together the palladium (II) chloride. One of the offers is in the manufacturing of ethylene come acetaldehyde
C2H4 + PdCl2 + H2O → CH 3CHO + Pd + 2 HCl
Due come its blue/green color, that is used in the manufacture of pyrotechnics.
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Health impacts / safety and security hazards: Copper (II) chloride is toxicity in high concentrations. It have the right to react with oxidizing agents. The link is not flammable.