The elementary reaction 2NO2(g) -> 2NO (g) + O2 (g) is second order in NO2 and the rate constant at 720k is 2.88 x 101M-1s-1. The reaction half life at this temperature when [NO2] = 0.45 M is ___ s .

What percentage of the initial amount of S02Cl2 2ilk remain after 2.25 hours?

The first-order reaction: S02CI2 → SO2 + Cl2 has a rate constant equal to 2.20 x 10-5 s-1 at 593 K. What percentage of the initial amount of SO,Cl2 will remain after 22.3 hours? 92.8 % 85.4 % O 1.00 % 17.1 % 14.7 %

4. Consider three hypothetical reactions of the type A → products. One of the reactions is zeroth order, one is first order, and one is second order. If they all have the same numerical value of the rate constant k (in units of M s ¹, s and M¹s¹, -1 -1 9 respectively), what must be the initial concentration [A]o if the half-lives are equal for a) the zeroth- and first-order reactions, b) the zeroth- and second-order reactions, and c) the first- and second-order reactions.