The decomposition of cyclopropane to propene is a unimolecular reaction. It can be studied over a range of pressures. The following data gives values of klst over a range of concentrations. Plot kl versus concentration and Kobs comment on the shape of the graph. Note: pV = nRT, hence pressure is proportional to concentration. 104c 0.120 0.605 1.27 2.31 7.13 159 mol dm-3 105k 1st obs 8.6 15.4 20.0 22.3 28.2 38.7 S Problem 3. (a) From the data in problem 2 find [A]1/2 and show this to equal k/k-1. (b) Find k and then k, taking Z = 5 10 mol- dm s, and = 1. S (c) Why can k_ be taken to equal a typical value of Z, the collision number? 1