2Cu + O2 = 2CuO
Cu(0) -2e = Cu(+2) 2 в-ль, ок-ие
O2(0) +4e = 2O(-2) 1 ок-ль, в-ие
СuO + 2HCl = CuCl2 + H2O
CuO + 2H(+) + 2Cl(-) = Cu(+2) + 2Cl(-) + H2O
CuO + 2H(+) = Cu(+2) + H2O
CuCl2 + 2NaOH = Cu(OH)2 + 2NaCl
Cu(OH)2 = CuO + H2O
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Answers & Comments
2Cu + O2 = 2CuO
Cu(0) -2e = Cu(+2) 2 в-ль, ок-ие
O2(0) +4e = 2O(-2) 1 ок-ль, в-ие
СuO + 2HCl = CuCl2 + H2O
CuO + 2H(+) + 2Cl(-) = Cu(+2) + 2Cl(-) + H2O
CuO + 2H(+) = Cu(+2) + H2O
CuCl2 + 2NaOH = Cu(OH)2 + 2NaCl
Cu(OH)2 = CuO + H2O