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Definition of Cu(OH)2
Cu(OH)2, also known as copper (II) hydroxide or copper hydrate, is a chemical compound of solvent, copper, and hydroxide. It has a molar mass of 97.561 g/mol and consists of one copper (II) ion and two hydroxide ions. In this molecule, the copper ion has two valence electrons and forms an octahedral molecular structure. -
Properties: Cu(OH)2
Copper (II) hydroxide typically exists as a pale blue, odorless powder with a basic pH. It is insoluble in water but soluble in solutions containing ammonium ions. Cu(OH)2 is not easily combustible and has no biological activity. -
Common chemical equations involving Cu(OH)2
Cu(OH)2 participates in various reactions. In reactions with acids, it forms copper salts and water. For example: Cu(OH)2 + 2HCl -> CuCl2 + 2H2O. It can also react with lighter metals to form pure copper and a new metal hydroxide. In reactions with nonmetals, it typically forms complex copper compounds. -
Preparation of Cu(OH)2
Copper (II) hydroxide can be prepared in the laboratory by reacting a solution of copper (II) sulfate with an alkali. For example: CuSO4 + 2NaOH -> Cu(OH)2↓ + Na2SO4. Industrially, copper hydroxide is usually produced by reacting a solution of copper (II) sulfate or chlorhydrate with an alkali.