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Question 3

Sample Data and Graphs Solution A Reaction Time Reaction Rate (sec) Experiment 0.1 M KIO, (sec) Water 1 50 mL 150 mL 17 0.0606 7 100 mL 100 mL 0.125 3 25 mL 175 mL 33 0.0303 4 20 mL 180 mL 45 0.0222 80 mL 120 mL 10 0.100 25 sec (predicted) 26 sec (actual) Challenge! 33 mL. 167 mI. 50 40 30 20 10 C 50 100 150 C Volume of KIO, (mL) 0.16 0.12 R 0.9986 0.08 0.04 0.00 150 100 50 Volume of KIO, (mL) Reference For a complete explanation of the principles of iodine clock reactions, please see "The Order of Reaction" experiment in Kinetics, Volume 14 in the Flinn Chem TopicLabs series; Cesa, I., Editor; Flinn Scientific: Batavia, IL (2003). Materials for Iodine Clock Challenge from Flinn Scientific Inc. are available as a Chemical Demonstration Kit Description lodine Clock Reaction-Chemical Demonstration Kit Catalog No. AP4601 Consult your Flinn Scientific Catalag/Reference Mansal for current prices /Time (sec) (oes) ou og

Answer 1

straight line time vs. conc. /volume of reactant giver gives Thus, the reaction is 1st be RIO3. reder with respect to Let, rate law, pate = K[420] m[420] Thus, Diinsa on 7" [15] 0,125 0.060 6 + 2 2m 150 from the data table it is true that, the regn rate. H2O, does not depends on Thus, m=1 The K value, 0,125 = K [100]" -D 0,125 Ek Courm) loome . 0,0625 = K X10-2 6.25 X10 =B K= rate expression mo Overall rate= K[ K103)'[420]° = K[KI Og]' Problem Any Best wishes comment