Em tham khảo nha:
\(\begin{array}{l}
1)\\
2KMn{O_4} + 16HCl \to 2KCl + 2MnC{l_2} + 5C{l_2} + 8{H_2}O\\
2)\\
xF{e_2}{O_3} + (3x - 2y)CO \xrightarrow{t^0} 2F{e_x}{O_y} + (3x - 2y)C{O_2}\\
3)\\
6FeS{O_4} + 3C{l_2} \to 2FeC{l_3} + 2F{e_2}{(S{O_4})_3}\\
4)\\
4Fe{(OH)_2} + {O_2} + 2{H_2}O \xrightarrow{t^0} 4Fe{(OH)_3}
\end{array}\)