Đáp án:

 2KMnO4 + 16HClđ $\buildrel{{t^o}}\over\longrightarrow$ 2KCl + 2MnCl2 +5Cl2 + 8H2O

Cl2 + H2 $\buildrel{{as}}\over\longrightarrow$ 2HCl

6HCl + Fe2O3 --> 2FeCl3 + 3H2O

FeCl3 +3 NaOH --> Fe(OH)3 + 3NaCl

2NaCl $\buildrel{{đpnc}}\over\longrightarrow$ 2Na +Cl2

3Cl2 + 6KOHđ $\buildrel{{100^oC}}\over\longrightarrow$ KClO3 + 5KCl +3 H2O

KClO3 +6 HClđ $\buildrel{{t^o}}\over\longrightarrow$ KCl + 3Cl2 + 3H2O

2KCl(tt)+ H2SO4đ $\buildrel{{t^o}}\over\longrightarrow$ K2SO4 + 2HCl

HCl + AgNO3 --> AgCl + HNO3

Giải thích các bước giải:

2KMnO4+ 16HCl -> 2KCl+ 2MnCl2+ 5Cl2+ 8H2O 

Cl2+ H2 $\buildrel{{as}}\over\longrightarrow$ 2HCl 

Fe(OH)3+ 3HCl -> FeCl3+ 3H2O 

FeCl3+ 3NaOH -> Fe(OH)3+ 3NaCl 

2NaCl $\buildrel{{đpnc}}\over\longrightarrow$ 2Na+ Cl2 

3Cl2+ 6KOH $\buildrel{{t^o}}\over\longrightarrow$ 5KCl+ KClO3+ 3H2O 

KClO3+ 6HCl -> KCl+ 3Cl2+ 3H2O 

KCl (khan)+ H2SO4 (đ) $\buildrel{{t^o}}\over\longrightarrow$ KHSO4+ HCl 

HCl+ AgNO3 -> AgCl+ HNO3