Em tham khảo nha:
\(\begin{array}{l}
a)\\
{A_1}:Na\\
{A_2}:NaOH\\
{A_3}:Fe{(OH)_2}\\
{A_4}:Fe{(OH)_3}\\
{A_5}:F{e_2}{O_3}\\
{A_6}:Fe\\
{B_1}:C{l_2}\\
{B_2}:CuC{l_2}\\
{B_3}:Cu{(N{O_3})_2}\\
{B_4}:Cu{(OH)_2}\\
{B_5}:CuO\\
{B_6}:Cu\\
b)\\
(1)\,2NaCl \xrightarrow{\text{ điện phân nóng chảy }} 2Na + C{l_2}\\
(1')\,2NaCl + 2{H_2}O \xrightarrow{\text{ điện phân dung dịch có màng ngăn }}2NaOH + C{l_2} + {H_2}\\
(2)\,2Na + 2{H_2}O \to 2NaOH + {H_2}\\
(3)\,FeC{l_2} + 2NaOH \to Fe{(OH)_2} + 2NaCl\\
(4)\,4Fe{(OH)_2} + 2{H_2}O + {O_2} \to 4Fe{(OH)_3}\\
(5)\,2Fe{(OH)_3} \xrightarrow{t^0} F{e_2}{O_3} + 3{H_2}O\\
(6)\,F{e_2}{O_3} + 3{H_2}\xrightarrow{t^0} 2Fe + 3{H_2}O\\
(10)\,Cu + C{l_2} \to CuC{l_2}\\
(11)\,CuC{l_2} + 2AgN{O_3} \to Cu{(N{O_3})_2} + AgCl\\
(12)\,Cu{(N{O_3})_2} + 2NaOH \to Cu{(OH)_2} + 2NaN{O_3}\\
(13)Cu{(OH)_2} \xrightarrow{t^0} CuO + {H_2}O\\
(14)\,CuO + {H_2} \xrightarrow{t^0} Cu + {H_2}O
\end{array}\)
