128. Solving a chemistry problem

4. For the reaction СН3СОСН3 → С2H4 + H2 + СО, determine the order and reaction rate constant, using the data on the process progress with time τ on the change in the partial pressure of acetone. Specify the dimension of the calculated rate constant
τ min 0 6.5 13.0 18.4
P, Pa 41589.6 34186.1 28159.2 23927.1
Prove that this reaction is a reaction of the first order and determine the average value of the rate constant at V, T = const.