Em tham khảo nha:
\(\begin{array}{l}
A:{H_2}\\
B:HCl\\
{H_2} + C{l_2} \to 2HCl\\
C:FeC{l_2}\\
Fe + 2HCl \to FeC{l_2} + {H_2}\\
E:NaOH\\
F:Fe{(OH)_2}\\
FeC{l_2} + 2NaOH \to Fe{(OH)_2} + 2NaCl\\
Fe{(OH)_2} + 2HCl \to FeC{l_2} + 2{H_2}O\\
G:Fe{(OH)_3}\\
4Fe{(OH)_2} + {O_2} + 2{H_2}O \xrightarrow{t^0} 4Fe{(OH)_3}\\
H:F{e_2}{O_3}\\
2Fe{(OH)_3} \xrightarrow{t^0} F{e_2}{O_3} + 3{H_2}O
\end{array}\)