a)
MnO2+4HCl->MnCl2+Cl2+2H2O
Cl2+H2-to>2HCl
HCl+NaOH->Nacl+H2O
2NaCl+2H2O-đp->2NaOH+H2+Cl2
3Cl2+2Fe-to>2FeCl3
FeCl3+3AgNO3->3AgCl+Fe(NO3)3
Fe(NO3)3+3NaOH->3NaNO3+Fe(OH)3
2Fe(OH)3-to>Fe2O3+3H2O
a)
1) MnO2 + 4HCl -> MnCl2 + Cl2 + 2H2O
2) Cl2 + H2 -> (ánh sáng) 2HCl
3) HCl + NaOH -> NaCl + H2O
4) 2NaCl (nóng chảy) -> (điện phân) 2Na + Cl2
5) 3Cl2 + 2Fe -> (t°) 2FeCl3
6) FeCl3 + 3AgNO3 -> Fe(NO3)3 + 3AgCl
7) Fe(NO3)3 + 3NaOH -> Fe(OH)3 + 3NaNO3
8) 2Fe(OH)3 -> (t°) Fe2O3 + 3H2O
2KMnO4+16HCl-to>2KCl+2MnCl2+5Cl2+8H2O
Cl2+2Na-to>2NaCl
Nacl+H2O-đp>NaOH+2HCl
2HCl+CuO->Cucl2+H2O
CuCl2+2AgNO3->2AgCl+Cu(NO3)2
Cu(NO3)2+2NaOH->2NaNO3+Cu(OH)2
Cu(OH)2-to>CuO+H2O
