9.2 g of N2O4 (g) is taken in a closed 1 L vessel and heated till the following equilibrium is reached. N2O4(g) ⇋ 2NO2(g) . At equilibrium, 50% N2O4 (g) is dissociated. What is the equilibrium constant (in mol/L) (molecular weight of N2O4 = 92).
(A) 0.1 (B) 0.2 (C) 0.3 (D) 0.4