Question

for the reaction N2 +O2 gives 2NO . equilibrium constant Kc =2 . degree of association is

Answer 1

 In the above reaction number of moles at equilibrium of
N2 = (1-a)
O2 = (1-a) and 
NO = 2a
​where a is the degree of dissociation
So equilibrium constant(k)= (2a)2/(1-a)2
  As a<<1 so
k=4a2
​a2 = k/4 =2/4  as k=2
a=root5

So degree of dissociation is root5..

Answer 2

Answer:

answer should be 1/√2+1