2Cu + O2 = 2CuO
CuO + 2HCl = CuCl2 + H2O
CuCl2 +2 NaOH = Cu(OH)2 + 2NaCl
Cu(OH)2 + H2SO4 = CuSO4 +2 H2O
CuSO4 + Ca(NO3)2 = Cu(NO3)2 + CaSO4
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2Cu + O2 = 2CuO
CuO + 2HCl = CuCl2 + H2O
CuCl2 +2 NaOH = Cu(OH)2 + 2NaCl
Cu(OH)2 + H2SO4 = CuSO4 +2 H2O
CuSO4 + Ca(NO3)2 = Cu(NO3)2 + CaSO4