CuO+H2SO4=CuSO4+H2O
Cu(OH)2+H2SO4=CuSO4+2H2O
Fe(OH)2+H2SO4=FeSO4+2H2O
CaCO3+2HCl=CaCl2+H2CO3 -->H2O+CO2(газ)
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Вот все уравнения ,..,,
CuO+H2SO4=CuSO4+H2O
Cu(OH)2+H2SO4=CuSO4+2H2O
Fe(OH)2+H2SO4=FeSO4+2H2O
CaCO3+2HCl=CaCl2+H2CO3 -->H2O+CO2(газ)