12112 CHM-202 Lab 5 Kinetics Rev 2 G5-19 B. Use the Arrhenius Equation (Chang Section 13.4) to calculate the activation

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12112 Chm 202 Lab 5 Kinetics Rev 2 G5 19 B Use The Arrhenius Equation Chang Section 13 4 To Calculate The Activation 1 (26.65 KiB) Viewed 48 times

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12112 Chm 202 Lab 5 Kinetics Rev 2 G5 19 B Use The Arrhenius Equation Chang Section 13 4 To Calculate The Activation 2 (43.32 KiB) Viewed 48 times

12112 Chm 202 Lab 5 Kinetics Rev 2 G5 19 B Use The Arrhenius Equation Chang Section 13 4 To Calculate The Activation 3 (40.66 KiB) Viewed 48 times

12112 CHM-202 Lab 5 Kinetics Rev 2 G5-19 B. Use the Arrhenius Equation (Chang Section 13.4) to calculate the activation energy Ea for this reaction using the Experiment No. 1 data at room temperature and the higher temperature (near 35 degrees C [3.2); remember to use K for temperature). Using this activation energy (Ea) and the rate constant at room temperature, calculate the rate constant at the lower temperature. How well do the two rate constants compare the rate constant calculated from the Ea and the rate constant from data obtained in [3.1]) ?
2. Kinetic Rate Data at Room Temperature, AL] -0.5 [Na:S,O 15.1] Room Temperature (°C) 12.11 26°c .00154 H/s Experiment Number Trial 1 Time Elapsed Trial 2 3min 10 sec 1. 2 min 2. . 42 sec 3 min 3. 8 sec 4 min 4. 52 sec Temperature (°C) Time Elapsed 1. [3.1) (Low Temp) 14 00 5 min 31 sec 1. [3.2) 37°c (High Temp) 1 min 42 sec 1. [4.1] 2 sec (RT, Cu²+ cat) 26°c
6/12 CHM-202 Lab 5 Kinetics Rev 2 G5-19 3. Kinetic Rate Data at Other Temperatures. 3.1 Prepare a water bath that is between 10 and 18 degrees and combine all of the reactants as you would for experiment 1. In a separate test tube place 5 mL of ammonium persulfate solution for the standard procedure or 500 uL in a separate microcentrifuge tube for the microscale. Place both of these test tubes (or microcentrifuge tubes) in the water bath for 5 minutes and add more cool water if necessary to maintain the temperature within 3 degrees. After the 5 minutes, pipette the amount of cooled persulfate solution described in the table above (2.2) into the other test tube and mix thoroughly. Keep the test tube (or microcentrifuge tube) in the water bath and shake occasionally. Record the time observed when the iodine starch complex is formed. Try to keep your water bath at as constant a temperature as you can. 3.2 Repeat 3.1 using a hot water bath (provided) about 35 degrees C. Record the time at which the iodine starch complex is observed.