chm2 - blue color, which is created by the interaction...

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Abstract Chemical kinetics encompasses the study of reaction rates, how these rates change due to conditions, and the molecular level activity that occurs in a reaction. The four common variables that influence reaction rate are the concentration of the reactant, temperature, catalyst, and surface area. For a reaction to occur, the molecules must collide and more collisions occur with increased thermal energy to greater number of molecules present. The purpose of our experiment was to determine rate law, reaction order, and the rate constant based on the reaction between sodium thiosulfate Ion with Iodide Ion. Set concentrations and volumes of these Ions were used along with a stop watch, thus creating a clock reaction. The addition of a set amount of sodium thiosulfate consumed a set amount of I2. Therefore, the
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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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This note was uploaded on 03/30/2010 for the course CHM 2 taught by Professor ? during the Spring '10 term at University of North Carolina Wilmington.

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chm2 - blue color, which is created by the interaction...

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