Đáp án:

 

Giải thích các bước giải:

a)2HCl->H2+Cl2

2Fe+3Cl2->2FeCl3

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

2NaCl+H2SO4->Na2SO4+2HCl

CuO+2HCl->CuCl2+H2O

CuCl2+2AgNO3->Cu(NO3)2+2AgCl

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

Cl2+H2->2HCl

Fe2O3+6HCl->2FeCl3+3H2O

FeCl3+3AgNO3->Fe(NO3)3+3AgCl

2AgCl->(as) 2Ag+Cl2

Cl2+2KBr->2KCl+Br2

Br2+2HI->2HBr+I2

Zn+I2->ZnI2

c)MnO2+4HCl->MnCl2+Cl2+2H2O

3Cl2+6KOH->5KCl+KClO3+3H2O

2KClO3->2KCl+3O2

2KCl+2H2O->2KOH+Cl2+H2

2Cl2+2Ca(OH)2->CaCl2+Ca(ClO)2+2H2O

\(\begin{array}{l}
a)\\
4HCl + Mn{O_2} \to MnC{l_2} + C{l_2} + 2{H_2}O\\
C{l_2} + Fe(du) \to FeC{l_2}\\
FeC{l_2} + 2NaOH \to Fe{(OH)_2} + 2NaCl\\
2NaCl + {H_2}S{O_4} \to N{a_2}S{O_4} + 2HCl\\
2HCl + CuO \to CuC{l_2} + {H_2}O\\
CuC{l_2} + 2AgN{O_3} \to 2AgCl + Cu{(N{O_3})_2}\\
b)\\
2KMn{O_4} + 16HCl \to 2KCl + 2MnC{l_2} + 5C{l_2} + 8{H_2}O\\
C{l_2} + {H_2} \to 2HCl\\
Fe + 2HCl \to FeC{l_2} + {H_2}\\
FeC{l_2} + 2AgN{O_3} \to 2AgCl + Fe{(N{O_3})_2}\\
2AgCl \to 2Ag + C{l_2}\\
C{l_2} + 2NaBr \to 2NaCl + B{r_2}\\
B{r_2} + 2NaI \to 2NaBr + {I_2}\\
c)\\
2KMn{O_4} + 16HCl \to 2KCl + 2MnC{l_2} + 5C{l_2} + 8{H_2}O\\
C{l_2} + {H_2} \to 2HCl\\
Fe + 2HCl \to FeC{l_2} + {H_2}\\
FeC{l_2} + 2AgN{O_3} \to 2AgCl + Fe{(N{O_3})_2}\\
2AgCl \to 2Ag + C{l_2}
\end{array}\)