La 3, ajutor dau coroana
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Răspuns:
CuSO4+2NaOH=> Cu(OH)2+ Na2SO4
Cu(OH)2+2HCl=> CuCl2 + 2H2O
Cu(OH)2=> CuO + H2O
Cu+ 2AgNO3 => Cu(NO3)2+2 Ag
Cu(OH)2 de culoare albastră