Cu⁰ + H+¹N+⁵O₃⁻²(к) = Cu+²(N+⁵O₃⁻²)₂ + N+⁴O₂⁻² + H₂⁺¹O-²
Cu⁰ - 2ē -> Mg+² │2│1
N+⁵ + 1ē -> N+⁴ │1│2
Cu + 4HNO₃(к) = Cu(NO₃)₂ + 2NO₂↑ + 2H₂O
Cu⁰ + H+¹N+⁵O₃⁻²(к) = Cu+²(N+⁵O₃⁻²)₂ + N+⁴O₂⁻² + H₂⁺¹O-²
Cu⁰ - 2ē -> Mg+² │2│1
N+⁵ + 1ē -> N+⁴ │1│2
Cu + 4HNO₃(к) = Cu(NO₃)₂ + 2NO₂↑ + 2H₂O