Đáp án:
Bạn tham khảo lời giải ở dưới nhé!!!
Giải thích các bước giải:
1,
\(\begin{array}{l}
Cu + C{l_2} \to CuC{l_2}\\
CuC{l_2} + 2NaOH \to Cu{(OH)_2} + 2NaCl\\
Cu{(OH)_2} \to CuO + {H_2}O\\
CuO + {H_2} \to Cu + {H_2}O\\
Cu + 2FeC{l_3} \to CuC{l_2} + 2FeC{l_2}\\
FeC{l_2} + 2NaOH \to Fe{(OH)_2} + 2NaCl\\
4Fe{(OH)_2} + {O_2} + 2{H_2}O \to 4Fe{(OH)_3}\\
2Fe{(OH)_3} \to F{e_2}{O_3} + 3{H_2}O\\
F{e_2}{O_3} + 2Al \to A{l_2}{O_3} + 2Fe\\
2A{l_2}{O_3} \to 4Al + 3{O_2}
\end{array}\)
2,
\(\begin{array}{l}
2Fe + 3C{l_2} \to 2FeC{l_3}\\
Fe + 2FeC{l_3} \to 3FeC{l_2}\\
FeC{l_2} + \dfrac{1}{2}C{l_2} \to FeC{l_3}\\
FeC{l_2} + 2NaOH \to Fe{(OH)_2} + 2NaCl\\
4Fe{(OH)_2} + {O_2} + 2{H_2}O \to 4Fe{(OH)_3}\\
2Fe{(OH)_3} \to F{e_2}{O_3} + 3{H_2}O\\
3F{e_2}{O_3} + CO \to 2F{e_3}{O_4} + C{O_2}\\
F{e_3}{O_4} + 4{H_2}S{O_4} \to F{e_2}{(S{O_4})_3} + FeS{O_4} + 4{H_2}O\\
FeS{O_4} + 2AgN{O_3} \to Fe{(N{O_3})_2} + A{g_2}S{O_4}
\end{array}\)
3,
1,
\(\begin{array}{l}
4Fe{S_2} + 11{O_2} \to 2F{e_2}{O_3} + 8S{O_2}\\
S{O_2} + \dfrac{1}{2}{O_2} \to S{O_3}\\
S{O_2} + NaOH \to NaHS{O_3}\\
S{O_3} + {H_2}O \to {H_2}S{O_4}\\
NaHS{O_3} + NaOH \to N{a_2}S{O_3} + {H_2}O\\
Cu + 2{H_2}S{O_4} \to CuS{O_4} + S{O_2} + 2{H_2}O\\
N{a_2}S{O_3} + 2HCl \to 2NaCl + S{O_2} + {H_2}O
\end{array}\)
2,
\(\begin{array}{l}
CaC{l_2} \to Ca + C{l_2}\\
Ca + 2{H_2}O \to Ca{(OH)_2} + {H_2}\\
Ca{(OH)_2} + C{l_2} \to CaOC{l_2} + {H_2}O\\
Ca{(OH)_2} + C{O_2} \to CaC{O_3} + {H_2}O\\
CaC{O_3} + 2HN{O_3} \to Ca{(N{O_3})_2} + C{O_2} + {H_2}O\\
Ca{(N{O_3})_2} + N{a_2}C{O_3} \to CaC{O_3} + 2NaN{O_3}\\
CaC{O_3} + C{O_2} + {H_2}O \to Ca{(HC{O_3})_2}\\
Ca{(HC{O_3})_2} \to CaC{O_3} + C{O_2} + {H_2}O
\end{array}\)
3,
\(\begin{array}{l}
4Al + 3{O_2} \to 2A{l_2}{O_3}\\
2Al + 3C{l_2} \to 2AlC{l_3}\\
A{l_2}{O_3} + 6HCl \to 2AlC{l_3} + 3{H_2}O\\
A{l_2}{O_3} + 3{H_2}S{O_4} \to A{l_2}{(S{O_4})_3} + 3{H_2}O\\
AlC{l_3} + 3AgN{O_3} \to Al{(N{O_3})_3} + 3AgCl\\
A{l_2}{(S{O_4})_3} + 6AgN{O_3} \to 2Al{(N{O_3})_3} + 3A{g_2}S{O_4}\\
A{l_2}{(S{O_4})_3} + 6NaOH \to 2Al{(OH)_3} + 3N{a_2}S{O_4}\\
Al{(N{O_3})_3} + 3NaOH \to Al{(OH)_3} + 3NaN{O_3}\\
Al{(OH)_3} + NaOH \to NaAl{O_2} + 2{H_2}O\\
NaAl{O_2} + C{O_2} + 2{H_2}O \to Al{(OH)_3} + NaHC{O_3}\\
NaAl{O_2} + {H_2}O \to A{l_2}{O_3} + 2NaOH\\
2Al{(OH)_3} \to A{l_2}{O_3} + 3{H_2}O
\end{array}\)
4,
\(\begin{array}{l}
Na + \dfrac{1}{2}C{l_2} \to NaCl\\
2NaCl + 2{H_2}O \to 2NaOH + {H_2} + C{l_2}\\
NaOH + HN{O_3} \to NaN{O_3} + {H_2}O\\
4NaN{O_3} \to 3N{a_2}O + 4N{O_2} + {O_2}\\
4N{O_2} + 4NaOH + {O_2} \to 4NaN{O_3} + 2{H_2}O
\end{array}\)
