Question

what type of reaction is the digestion of solid copper wire by nitric acid? , !

Answer 1

oxidation - reduction (redox)

there are 2 formulas:

Cu + 4 HNO3 --> Cu(NO3)2 + 2 NO2 + 2 H2O

which produces nitrogen dioxide

3 Cu + 8 HNO3 --> 3 Cu(NO3)2 + 2 NO + 4 H2O

which produces nitric oxide.