We did an experiment where we mixed Solution A with Solution B and found out the time. These are my results: Solution A (0.020 mol/L potassium iodate solution plus distilled water) 10 drops potassium iodate plus 0 drops distilled water 9 drops potassium iodate plus 1 drops distilled water 8 drops potassium iodate plus 2 drops distilled water 7 drops potassium iodate plus 3 drops distilled water Solution B (0.001 mol/L sodium bisulfate/ hydrochloric acid/starch) 10 drops 10 drops 10 drops 10 drops Time is took to turn blue (s) 9 13 10 9 I need help with these questions: 1. How do I find concentration of potassium iodate? (do I divide 0.020 mol/L by something?) 2. And to find order of reaction with respect to potassium iodate I graph 1/time vs. concentration and square or cube it until I get a straight line right? But why do I want a straight line?