o study the photochemical decay of aqueous bromine in bright sunlight a small quantity of liquid bromine was dissolved in water contained in a glass battery jar and placed in direct sunlight. The following data were obtained: Time (min)  10        20      30      40      50       60 ppm Br2      2.45    1.74   1.23   0.88   0.62    0.44 1. Determine the reaction order and calculate the reaction rate constant in the units of your choice.  2. Assuming identical exposure conditions, calculate the required hourly rate of injection of bromine in kg into a sunlit body of water 0.095m3 in volume to maintain a sterilizing level of bromine of 1.00 ppm.  3. What experimental conditions would suggest if you were to obtain more data?

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