In the diagram above, the gas produced is?
A.
NO
B.
NO2
C.
N2O
D.
N2O4
Correct answer is B
In this laboratory preparation, 50% trioxonitrate (V) acid is reacted with copper turnings to liberate nitrogen (II) oxide ( NO ) that is collected by downward delivery.
Cu+\(4HNO_3 →Cu(NO_3)_2+2NO_2+2H_2O\)