<Dd> K 1 = (NO) (NO 3) (NO 2) 2 (\ displaystyle K_ (1) = (\ frac ((\ ce ((NO) (NO3)))) ((\ ce ((NO2) ^ 2))))) </Dd> <Dd> (NO 3) = K 1 (NO 2) 2 (NO) (\ displaystyle ((\ ce (NO3))) = K_ (1) (\ frac ((\ ce ((NO2) ^ 2))) ((\ ce ((NO)))))) </Dd> <P> The overall reaction rate would then be </P> <Dl> <Dd> r = r 2 = k 2 (NO 3) (CO) = k 2 K 1 (NO 2) 2 (CO) (NO) (\ displaystyle r = r_ (2) = k_ (2) (\ ce ((NO3) (CO))) = k_ (2) K_ (1) (\ frac ((\ ce ((NO2) ^ 2 (CO)))) ((\ ce ((NO)))))), </Dd> </Dl>

The rate determining step for a reaction is characterized by