Question

Why is Cu+2HNO3 =Cu(NO3)2 + H2 this reaction is not possible​

Answer 1

Answer:

Redox reaction:

Cu –> Cu(+2) + 2 e(-)

NO3(-)+ 2H(+) + 1 e(-) –> NO2 + H2O

so, we take the reduction Rx ×2 and we have:

Cu + 2HNO3 +2H(+) –> Cu (+2)+2NO2 +2H2O

with two nitric radicals to both sides (extra acid):

Cu + 4 HNO3 –> Cu(NO3)2+ 2NO2 +2H2O

Answer 2

Answer:

Redox reaction.........