1. If we don’t measure the concentration of persulfate at the clockpoint, how can we know its concentration? 2. What is the value of the rate constant at room temperature for the iodine clock reaction? Part 2: 1. If the temperature is increased or decreased by 10C, by what factor does the iodine-clock reaction speed up or slow down? 2. What is the value of the activation energy for the iodine clock reaction? Post-Lab Questions: 1. A group of students forgot to add thiosulfate to one test tube. What will they observe? 2. When performing part 2 of this lab a group of students forgot to place the test tubes int the hot-water bath for 10 min before starting the reaction. Only after adding persulfate they placed the test tubes into the hot water-bath. How will this mistake affect their data and their results? 3. Is it possible to determine k’ with a single measurement? a. Explain how. b. Why did we bother to perform multiple measurements to determine k’ if we can do it with a single measurement? 4. Using your Arrhenius plot, determine the rate constant at 80C. How many seconds would it take for determination 5 to clock at 80C?