4HNO3 + Cu = Cu(NO3)2 + 2NO2 + 2H2O
N+5 +1e= N+4
Cu⁰ - 2e = Cu+2
12HNO3 + 5Cu = 5Cu(NO3)2 + N2 + 6H2O
2N +5 +10e = N₂⁰
Cu⁰ - 2e = Cu+2
10HNO3 + 4Cu = 4Cu(NO3)2 + N2O + 5H2O
2N+5 +8e = 2N+
Cu⁰ - 2e = Cu+2
10HNO3 + 4Cu = 4Cu(NO3)2 + NH4NO3 + 3H2O
N+5 + 8e = N-3
Cu⁰ - 2e = Cu+2
8HNO3 + 3Cu = 3Cu(NO3)2 + 2NO + 4H2O
N+5 +3e= N+2
Cu⁰ - 2e = Cu+2