Mình cần mọi người ặ :(

Em tham khảo nha:

\(\begin{array}{l}
a)\\
(1)\,4Al + 3{O_2} \xrightarrow{t^0} 2A{l_2}{O_3}\\
(2)\,A{l_2}{O_3} + 6HCl \to 2AlC{l_3} + 3{H_2}O\\
(3)\,AlC{l_3} + 3NaOH \to Al{(OH)_3} + 3NaCl\\
(4)\,2Al{(OH)_3} \xrightarrow{t^0} A{l_2}{O_3} + 3{H_2}O\\
(5)\,2A{l_2}{O_3} \to 4Al + 3{O_2}\\
(6)2Al + 6HCl \to 2AlC{l_3} + 3{H_2}\\
b)\\
(1)\,Fe + {H_2}S{O_4} \to FeS{O_4} + {H_2}\\
(2)\,FeS{O_4} + 2NaOH \to Fe{(OH)_2} + N{a_2}S{O_4}\\
(3)\,Fe{(OH)_2} + 2HCl \to FeC{l_2} + 2{H_2}O\\
c)\,\\
(1)\,FeC{l_3} + 3NaOH \to Fe{(OH)_3} + 3NaCl\\
(2)\,2Fe{(OH)_3} \xrightarrow{t^0} F{e_2}{O_3} + 3{H_2}O\\
(3)\,F{e_2}{O_3} + 3CO \xrightarrow{t^0} 2Fe + 3C{O_2}\\
(4)\,2Fe + 3C{l_2} \to 2FeC{l_3}
\end{array}\)