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1. What is the role of the thiosulfate ion in the iodide-bromate clock reaction? 2. Is the thiosulfate ion a limiting reagent? Why or why not? 3. Why is the concentration of the thiosulfate ion never changed? 4. What is the role of the starch solution in the iodide-bromate clock reaction? 5. Show that the iodide-bromate clock reaction is a redox reaction (It may be helpful to treat I3−​as I2​ ). 6. For part 2, what is the role of adding water to the reaction mixture? Why is this necessary? 7. For part 2, why is it important to keep the temperature the same? 8. If not already done so, design two additional experiments (numbers 6 and 7 in table 1) to help determine the order with respect to (1) the iodide ion and (2) the iodate ion. 9. In conclusion, what is your final answer for part 2 (what is the rate law)? 10. Based on your experimental results, how did the molybdate ion catalyst affect the rate of the reaction? By about how times did the rate increase? Is this what you expected for a catalyst?