Consider the following reaction, equilibrium concentrations, and equilibrium constant at a particular temperature. Determine the equilibrium concentration of NO2(g). N2O4(g) ⇌ 2 NO2(g) Kc = 0.21 [N2O4]eq = 0.037 M Consider the following reaction, equilibrium concentrations, and equilibrium constant at a particular temperature. Determine the equilibrium concentration of NO2(g). N2O4(g) ⇌ 2 NO2(g) Kc = 0.21 [N2O4]eq = 0.037 M 8.8 × 10-2 M 7.8 × 10-3 M 1.3 M 1.3 × 102 M 1.4 × 10-1 M