Question

1) Fe₂O₃ + H₂ ---> Fe₃O₄ + H₂O

2) MnO₂+HBr ---> Br₂ + MnBr₂+ HO₂

3)Cl₂ + SO₂ +H₂O ---> HCl + H₂SO₄

4) KHCO₃ + Ca(OH)₂ ---> K₂CO₃ + CaCO₃ + H₂O

Answer 1

1) 3Fe₂O₃ + H₂ ---> 2Fe₃O₄ + H₂O

2) MnO₂+4HBr ---> Br₂ + MnBr₂+ 2H₂O

3)Cl₂ + SO₂ +2H₂O ---> 2HCI + H₂SO₄

4) 2KHCO₃ + Ca(OH)₂ ---> K₂CO₃ + CaCO₃ + 2H₂O

Answer 2

1) 3Fe₂O₃ + H₂ ---> 2Fe₃O₄ + H₂O

2) MnO₂+4HBr ---> Br₂ + MnBr₂+ 3H2O

3)Cl₂ + SO₂ +2H₂O ---> 2HCl + H₂SO₄

4) 2KHCO₃ + Ca(OH)₂ ---> K₂CO₃ + CaCO₃ + 2H₂O

Chúc bạn học tốt

Answer 3

1)3Fe2O3+H2-->2Fe3O4+H2O
2)MnO2+4HBr-->Br2+MnBr2+2H2O
3)Cl2+SO2+2H2O--->2HCl+H2SO4
4)2KHCO3+Ca(OH)2--->K2CO3+CaCO3+2H2O