Odpowiedź :
a) Ca(OH)2+H2SO4--->CaSO4+2H2O
Ca+H2SO4--->CaSO4+H2
CaO+H2SO4--->CaSO4+H2O
b) Fe(OH)3+3HCl--->FeCl3+3H2O
2Fe+6HCl--->2FeCl3+3H2
Fe2O3+6HCl--->2FeCl3+3H2O
a) Ca(OH)2+H2SO4--->CaSO4+2H2O
Ca+H2SO4--->CaSO4+H2
CaO+H2SO4--->CaSO4+H2O
b) Fe(OH)3+3HCl--->FeCl3+3H2O
2Fe+6HCl--->2FeCl3+3H2
Fe2O3+6HCl--->2FeCl3+3H2O