Em tham khảo nha:
\(\begin{array}{l}
Cu + 4HN{O_3} \to Cu{(N{O_3})_2} + 2N{O_2} + 2{H_2}O\\
1 \times |Cu \to C{u^{ + 2}} + 2e\\
2 \times |{N^{ + 5}} + 1e \to {N^{ + 4}}\\
3Cu + 8HN{O_3} \to 3Cu{(N{O_3})_2} + 2NO + 4{H_2}O\\
3 \times |Cu \to C{u^{ + 2}} + 2e\\
2 \times |{N^{ + 5}} + 3e \to {N^{ + 2}}\\
N{H_4}N{O_3} \to {N_2}O + 2{H_2}O\\
1 \times |{N^{ - 3}} \to {N^{ + 1}} + 4e\\
1 \times |{N^{ + 5}} + 4e \to {N^{ + 1}}\\
N{H_4}N{O_2} \to {N_2} + 2{H_2}O\\
1 \times |2{N^{ - 3}} \to {N_2} + 6e\\
1 \times |2{N^{ + 3}} + 6e \to {N_2}\\
2AgN{O_3} \to 2Ag + {O_2} + 2N{O_2}\\
1 \times |2{O^{ - 2}} \to {O_2} + 4e\\
2 \times |A{g^ + } + {N^{ + 5}} + 2e \to A{g^0} + {N^{ + 4}}
\end{array}\)
