Cu→CuO→CuSO₄→Cu(OH)₂→CuO→Cu→Cu(NO₃)₂
2Cu+O₂=2CuO
CuO+H₂SO₄=CuSO₄+H₂O
CuSO₄+NaOH=Cu(OH)₂+Na₂SO₄
Cu(OH)₂+t°C=CuO+H₂O
CuO+H₂=Cu+H₂O
Cu + 4HNO₃(конц.) = Cu(NO₃)₂ + 2NO₂↑ + 2H₂O + Q
Cu→CuO→CuSO₄→Cu(OH)₂→CuO→Cu→Cu(NO₃)₂
2Cu+O₂=2CuO
CuO+H₂SO₄=CuSO₄+H₂O
CuSO₄+NaOH=Cu(OH)₂+Na₂SO₄
Cu(OH)₂+t°C=CuO+H₂O
CuO+H₂=Cu+H₂O
Cu + 4HNO₃(конц.) = Cu(NO₃)₂ + 2NO₂↑ + 2H₂O + Q