Viết các phương trình phản ứng xảy ra cho các sơ đồ sau: a. HCl -> Cl2-> FeCl2 -> Nacl -> HCl -> CuCl2-> AgCl b. KMnO4 -> Cl2 -> HCl -> FeCl2 -> AgCl

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