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Unformatted text preview: blue color, which is created by the interaction between I2 and starch, formed once the thiosulate was fully consumed. This gave data that allowed us to graphically determine both the rate law and constant k. The four solutions used in this experiment were prepared as follows: Soln. 1 : 25 mL KI solution 1.0 mL starch 1.0 mL Na2S2O3 48 mL KNO3 1 drop EDTA. Total Volume=75.0 mL Soln.2 : 25 mL KI 1.0 mL starch 1.0 mL Na2S2O3 23.0 mL KNO3 1 Drop EDTA. Total Volume=50.0 mL Soln. 3: 50 mL KI 1.0 mL starch 1.0 mL Na2S2O3 23.0 mL KNO3 solution 1 Drop EDTA. Total Volume=75.0 mL Soln. 4: 12.5 mL KI 1.0 mL starch 1.0 mL Na2S2O3 35.5 mL KNO3 1 drop EDTA. Total Volume=50.0 mL Procedure Reference Basic Laboratory Techniques, Catalyst, (pp. 187-200). Boston, MA: Pearson....
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