2CuS + 3O2= 2CuO + 2SO2
CuO + 2HNO3= Cu(NO3)2 + H2O
Cu(NO3)2 = Cu + 2NO3
Cu + 2HCl = CuCl2 + H2
CuCl2 + 2NaOH = Cu(OH)2 + 2NaCl
Cu(OH)2 + H2SO4 = CuSO4 + 2H2O
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2CuS + 3O2= 2CuO + 2SO2
CuO + 2HNO3= Cu(NO3)2 + H2O
Cu(NO3)2 = Cu + 2NO3
Cu + 2HCl = CuCl2 + H2
CuCl2 + 2NaOH = Cu(OH)2 + 2NaCl
Cu(OH)2 + H2SO4 = CuSO4 + 2H2O