Which of the following are redox reactions?
I. 2 N2 + 3 H2 2 NH3
II. 4 Al + 3 O2 2 Al2O3
III. 2 NO2 N2O4
IV. FeCl3 (aq) + 6 NH3(aq) (\rarr\) Fe(NH3) 63+ (aq) + 3 Cl- (aq)
V. Cu2+ + Zn Cu + Zn2+
A) I, IV and V
B) All but III
C) I and II
D) I, II and IV
E) I, II and V
Correct Answer:
Verified
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