a;
SO2 + H2O ->H2SO3
CaO+ H2O ->Ca(OH)2
b;
CaO + H2SO4 ->CaSO4 + H2O
Fe + H2SO4 ->FeSO4 + H2
c;
Ca(OH)2 + SO2 ->CaSO3 + H2O
CaOH)2 + 2HCl ->CaCl2 + 2H2O
Đúng 0
Bình luận (5)
a, PTHH: SO2+H2O----> H2SO3
CaO+H2O----> Ca(OH)2
Fe+2H2O----> Fe(OH)2+H2
b, PTHH: CaO+H2SO4----> CaSO4+H2O
Fe+H2SO4---->FeSO4+H2
c, PTHH: SO2+Ca(OH)2----> CaSO3+H2O
Fe+Ca(OH)2----> Fe(OH)2+Ca
2HCl+Ca(OH)2----> CaCl2+2H2O
Đúng 0
Bình luận (7)