The equilibrium constant for the reaction, N2 (g)+O2 (g) = 2NO(g) is 4×10^−4 at 2000 k. In the presence of a catalyst, the equilibrium is attained ten times faster. Therefore, the equilibrium constant in the presence of the catalyst of 2000 k is: N2 (g)+O2 (g) = 2NO(g) is 4×10^−4 at 2000 k. [...]