Determine the average rate of the reaction

Question

Triphenylmethyl chloride hydrolyzes in aqueous solution according to the chemical equation:

Ph₃CCl + H₂O → Ph₃COH+ H +  + CL -

The rate of this reaction has been studied and the data in the table were obtained:

Time (S)    [Ph3CCL] M

0                  1.44

18                1.34

57                1.13

93                 0.96

171               0.68

298               0.40

448               0.21

508               0.16

a. Estimate the order of the reaction?

b. Determine the average rate of the reaction M/s over the entire time interval.

c. Determine the value of the rate constant, K?

d. Determine the half -life in seconds for the reaction.

e. Calculate the concentration of Ph3CCL after 320seconds.