At 35ºC, the Equilibrium Constant for the Reaction 2NOCl(g)

Multiple Choice

At 35ºC, the equilibrium constant for the reaction 2NOCl(g) 2NO(g) + Cl₂(g) is K_c = 1.6 × 10^-5. An equilibrium mixture was found to have the following concentrations of Cl₂ and NOCl: [Cl₂] = 1.2 × 10^{-2 M}; [NOCl] = 2.8 × 10^{-1 M}. Calculate the concentration of NO(g) at equilibrium.

A) 1.0 × 10^{-4 M}
B) 1.0 × 10^{-2 M}
C) 2.8 × 10^{-1 M}
D) 2.4 × 10^{-2 M}
E) 1.6 × 10^{-3 M}