Question

Which oxide of nitrogen is most stable at 2739 K?
a) N,0, 2N, +50, ; Kc =1 x1034 b) 2N,0—2N+0, ; K=1x1099
c) 2NON,+O, ; Kc =1x1099 d) 2NO, 'N, +20,; K=1x101​

Answer 1

Answer:

NO

2

(g)⇌2NO(g)+O

2

(g);K=6.7×10

16

The most stable oxide of nitrogen will be NO

2

as it has lower value of equilibrium constant.

Stability constant =

K

1

∴ Smaller is the value of equilibrium constant greater is the stability of oxide

Other reactions have higher value of equilibrium constant. So these oxides are less stable.