Estimate the value of the equilibrium constant at 650 {rm K} for each of the following reactions. Delta H{^{circ}_{rm f}} and S{^{circ}} for rm BrCl(g) is 14.6 {rm kJ/mol} and 240.0 frac {rm J}{rm mol cdot K}, respectively.
2{rm NO_2}(g) rightleftharpoons {rm N_2O_4}(g)