Ответ:
а)2
Fe+2 HCl = FeCl2+ H2
CuO + 2 HCl = CuCl2 + H2O
б)3
2 NaOH + 2 CO2 =2 NaHCO3
2 NaOH + H2SO4 = Na2SO4 + 2 H2O
в)4
2 Сu+ O2 = 2 CuO
S + O2 = SO2
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Ответ:
а)2
Fe+2 HCl = FeCl2+ H2
CuO + 2 HCl = CuCl2 + H2O
б)3
2 NaOH + 2 CO2 =2 NaHCO3
2 NaOH + H2SO4 = Na2SO4 + 2 H2O
в)4
2 Сu+ O2 = 2 CuO
S + O2 = SO2