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Attach a graph of In k vs I/T. Calculate the slope of your straight line Determine the Activation Energy Ea (kJ/mol) =

Attach a graph of In k vs I/T. Calculate the slope of your straight line Determine the Activation Energy Ea (kJ/mol) =

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Attach a graph of In k vs I/T.

Calculate the slope of your straight line

Determine the Activation Energy Ea (kJ/mol) =

Please show work and what you plugged in for formula 

at Room Temp B. Dependence of Reaction Rate on Temperature. T= Temperature (K) At time elapsed (s) Rate (mol L-1 s-¹) k= Rate Constant (K-1) 1/T In k Experiment 4 273K 205 24x10-6 2,5x10-4 3.606x10-3 -7.2 [1¹], initial = 2.0800n [S₂082-], initial-Q.04001 Experiment 6 Experiment 5 2881 6-10x 10-6 2.1x 10-3 3.47x10-3 -607 303k 3 1.5x10-5 4:7x10-3 3.30x10-3 -5.4
Transcribed Image Text:at Room Temp B. Dependence of Reaction Rate on Temperature. T= Temperature (K) At time elapsed (s) Rate (mol L-1 s-¹) k= Rate Constant (K-1) 1/T In k Experiment 4 273K 205 24x10-6 2,5x10-4 3.606x10-3 -7.2 [1¹], initial = 2.0800n [S₂082-], initial-Q.04001 Experiment 6 Experiment 5 2881 6-10x 10-6 2.1x 10-3 3.47x10-3 -607 303k 3 1.5x10-5 4:7x10-3 3.30x10-3 -5.4
Rate Dependence on Temperature. For all reactions, the rate increases and the time required for a reaction to occur decreases as the temperature gets higher. The temperature dependence of the reaction shows up in the rate constant, k. The Arrhenius Equation states the temperature dependence of k. (1) Arrhenius Equation k = A e-Ea/RT General Linear Form Taking the logarithm of this exponential relationship yields a linear equation. where; y=mx+b (2) Arrhenius Linear Form In k= (-E/R) 1 + In A T In k 1/T Experiment 16 A Kinetic Study of an Iodine Clock Reaction y-axis must be ln k x-axis must be 1/T m = slope of graph Ea = activation energy R 8.314 J/mol K Slope = A (ln k) A (1/T) T = temperature in K A constant 1=- Ea/R - E R (rev 1/14) Note: Fit a straight line to the 3 points on your In k vs 1/T plot. Determine its slope from your graph and then use the relationship above to calculate the activation energy, E₁. Page 4 You will use data from experiments provided in part B2 to draw the graph and determine the activation energy from the slope.
Transcribed Image Text:Rate Dependence on Temperature. For all reactions, the rate increases and the time required for a reaction to occur decreases as the temperature gets higher. The temperature dependence of the reaction shows up in the rate constant, k. The Arrhenius Equation states the temperature dependence of k. (1) Arrhenius Equation k = A e-Ea/RT General Linear Form Taking the logarithm of this exponential relationship yields a linear equation. where; y=mx+b (2) Arrhenius Linear Form In k= (-E/R) 1 + In A T In k 1/T Experiment 16 A Kinetic Study of an Iodine Clock Reaction y-axis must be ln k x-axis must be 1/T m = slope of graph Ea = activation energy R 8.314 J/mol K Slope = A (ln k) A (1/T) T = temperature in K A constant 1=- Ea/R - E R (rev 1/14) Note: Fit a straight line to the 3 points on your In k vs 1/T plot. Determine its slope from your graph and then use the relationship above to calculate the activation energy, E₁. Page 4 You will use data from experiments provided in part B2 to draw the graph and determine the activation energy from the slope.
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