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Crystallographical and chemical hypothesis for the formation process of CuO(s) and Cu(OH)2(s) from Na2Cu(OH)4(s). Addition of water into systems containing the solid Na2Cu(OH)4(s) and its saturated solution allows the formation of two different solids: CuO(s) and Cu(OH)2(s). Copper oxide is obtained by a slow addition and corresponds to the equilibrium state; copper hydroxide is obtained by the fast...
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