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REPORT SHEET for EXPERIMENT 4 Rates of Chemical Reactions DATA ANALYSIS 1. Calculate the initial molar concentration of FeCls and KI for each reaction and record the values in the table above. Show all calcolations on the next page. 2. Give the order of the reaction in tems of both FeCls and KL. Show calculations for order of each reactant on the next page. 3. Write the rate law expression for the reaction. 4. It is not possible to calculate the actual valuc of the rate constant, k, from the data obtained in this experiment. Explain below why the value for the true rate constant eannot be determined. 5. Calculate the value for a modified rate constant, k ', for each run and enter the values in the table above. Show all calculations on the next page. CHEM-118 Experimeot 4, 2021 Total volume for all trials: 1. Initinl concentration of FeCl3. Trial 1: Trial 2: Trial 3: 2. Initial concentration of KI. Trial 1: Trial 2: Trial 3: 3. Determination of Order for reactants: Trial 1 / Trail 2: Trial 1 Crail 3: 4. Calculation of x : CHEM-118: Experiment 4, 2021 conduct the reactions according to the chart below. Use graduated cylinders t ut the volumes of reactants and distilled water. Add the distilled water to the K standardize your process. Place the two reactants in separate beakers. repare for Trial I and collect absorbance data. Measure 20.0mL of FeCl3 solution into a 100mL beaker. b. Measure 20.0mL of Kl solution into a second 100mL. beaker. c. Remove the cuvette from the Colorimeter and pour out the distilled water. d. Add the 20.0mL of FeCl3 solution to the beaker of KI solution. Swirl the mix. e. Rinse the cuvette twice with 1mL amounts and then fill it 3/4 full. Wipe th of the cuvette with a tissue, place it in the Colorimeter, and close the lid. Click "Collect" to begin collecting absorbance data. Data will be gathered for 2 Observe the progress of the reaction in the beaker. When the data collection is complete, carefully remove the cuvette from the Cok Dispose of the contents of the beaker and cuvette as directed. Rinse and clean the and the cuvette for the next trial. Examine the graph of the first trial. Select a linear region of the graph that covers a 40 seconds of the reaction. Click the Linear Regression button. Record the slop initial rate of the Trial I reaction, in your data table. Store the data. Repeat Steps 6-9 to conduct Trials 2-3. Add the volume of distilled water to the volume of reactant before mixing the two reactant solutions. Note: You will skig in Trials 23. Clean-up - Waste Disposal: Place all solutions into a waste beaker at the bi Then pour the solutions form the waste beaker into the container in the hood lal
