For the reaction in equilibrium,
N2O4 (g) 2NO(g) ⇋ The concentrations, of N2O4 and NO2 at equilibrium are 4.8 × 10‒2 and 1.2 × 10‒2 mol L‒1 respectively. The value of Kc for this reaction is:
(A) 3 x 10-3 mol L-1
(B) 3 x 103 mol L−1
(C) 3.3 x 102 mol L−1
(D) 3 x 10-1 mol L-1