The equilibrium constant for the reaction N2(g) + O2(g) 2NO(g) at temperature T is 4×10–4. The value of Kc for the reaction NO N (g) O (g) at the same temperature is

2 2 N +O 2NO 2 -4 c 2 2 NO K = 4×10 = ... i N O For 2 2 1 1 NO N + O 2 2 1 1 2 2 2 2 c N O K = NO 1 2 2 2 c 2 N O K = ... ii NO From i and ii 1 2 2 c -4 1 1 K = = ×10 = 50 2 4×10 Equilibrium Constant & Concentrations