1. 1-Hexene reacts with iodine, I2, in acetic acid to form 1,2-diiodohexane according to the general rate equation d[12] dt k[12]m [hexene]" A reaction was carried out in the presence of a very large excess of 1-hexene relative to the amount of iodine involved. The results are tabulated: Time/s 0 1000 2000 3000 4000 5000 6000 7000 8000 |[12]/mol dm-3 | 0.02 0.0156 0.0128 0.0109 0.0094 0.0083 0.0075 0.0068 0.0062 i) Briefly explain why the experimenter used conditions in which the amount of 1-hexene greatly exceeded the amount of iodine. iii) Plot the natural log of the concentration of 12, In[12], against time. What conclusion do you draw about the order of the reaction with respect to the concentration of iodine? Explain your reasoning. iv) Plot 1/[12] against time. What conclusion do you draw about the order of the reaction with respect to the concentration of iodine? Explain your reasoning. v) Determine the value of the rate constant k' where k'is the apparent rate constant in the presence of a large excess of 1-hexene. Show your working. d[12] dt = k' [12]m