DATA AND CALCULATIONS Rate constant, k (54) Trial Temperature (*C) 1 25 0.005144 20 0.004020 3 15 0.003562 4 10 0.003255 DATA ANALYSIS 1. Determine the activation energy, Ea, by plotting the natural log of k (In k) vs. the reciprocal of absolute temperature (1/T). Note: Absolute temperature, T= °C + 273. a. Choose New Calculated Column from the Data menu. b. Create a column, In rate constant, k. c. Create a second column, reciprocal of absolute temperature, 1/(Temperature (°C) + 273). d. On the displayed graph, plot In rate constants (In k) on the y-axis and the reciprocal of absolute temperature (1/T) on the x-axis by clicking on the respective axes labels. Autoscale the graph if necessary. Note: Attach this graph you created in your lab report as Figure 6 (title the graph properly). Describe the relationship between In k vs. 1/T. 2. Calculate the activation energy, Eo, for the reaction. To do this, first calculate the best fit line equation (linear fit) for the data in Step 2. Record the slope, m, of the linear fit below and use it to calculate the activation energy, Eo, in units of kJ/mol. Note: On a plot of In k vs. 1/T, Eg = m x R. 3. A well-known approximation in chemistry states that the rate of a reaction often doubles for every 10°C increase in temperature. Use your data to test this rule. (Note: It is not necessarily equal to 2.00; this is just an approximate value, and depends on the activation energy for the reaction.) CALCULATIONS: Slope, m : Activation Energy, Ea (kJ/mol) :,
DATA AND CALCULATIONS Rate constant, k (54) Trial Temperature (*C) 1 25 0.005144 20 0.004020 3 15 0.003562 4 10 0.003255 DATA ANALYSIS 1. Determine the activation energy, Ea, by plotting the natural log of k (In k) vs. the reciprocal of absolute temperature (1/T). Note: Absolute temperature, T= °C + 273. a. Choose New Calculated Column from the Data menu. b. Create a column, In rate constant, k. c. Create a second column, reciprocal of absolute temperature, 1/(Temperature (°C) + 273). d. On the displayed graph, plot In rate constants (In k) on the y-axis and the reciprocal of absolute temperature (1/T) on the x-axis by clicking on the respective axes labels. Autoscale the graph if necessary. Note: Attach this graph you created in your lab report as Figure 6 (title the graph properly). Describe the relationship between In k vs. 1/T. 2. Calculate the activation energy, Eo, for the reaction. To do this, first calculate the best fit line equation (linear fit) for the data in Step 2. Record the slope, m, of the linear fit below and use it to calculate the activation energy, Eo, in units of kJ/mol. Note: On a plot of In k vs. 1/T, Eg = m x R. 3. A well-known approximation in chemistry states that the rate of a reaction often doubles for every 10°C increase in temperature. Use your data to test this rule. (Note: It is not necessarily equal to 2.00; this is just an approximate value, and depends on the activation energy for the reaction.) CALCULATIONS: Slope, m : Activation Energy, Ea (kJ/mol) :,
Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter15: Molecular Luminescence Spectrometry
Section: Chapter Questions
Problem 15.15QAP: The following lifetimes were measured for the chloride quenching of quinine sulfate given in Example...
Related questions
Question
100%
Please can you help me out with this, thank you so much.
Transcribed Image Text:DATA AND CALCULATIONS
Rate constant, k
(s-4)
Trial
Temperature
(°C)
1
25
0.005144
20
0.004020
15
0.003562
4
10
0.003255
DATA ANALYSIS
1. Determine the activation energy, Ea, by plotting the natural log of k (In k) vs. the reciprocal of
absolute temperature (1/T). Note: Absolute temperature, T= °C + 273.
a. Choose New Calculated Column from the Data menu.
b. Create a column, In rate constant, k.
c. Create a second column, reciprocal of absolute temperature, 1/(Temperature (°C) + 273).
d. On the displayed graph, plot In rate constants (In k) on the y-axis and the reciprocal of
absolute temperature (1/T) on the x-axis by clicking on the respective axes labels. Autoscale
the graph if necessary.
Note: Attach this graph you created in your lab report as Figure 6 (title the graph properly).
Describe the relationship between In k vs. 1/T.
2. Calculate the activation energy, Eo, for the reaction. To do this, first calculate the best fit line
equation (linear fit) for the data in Step 2. Record the slope, m, of the linear fit below and use it
to calculate the activation energy, Eo, in units of kJ/mol.
Note: On a plot of In k vs. 1/T, Ea = m x R.
3. A well-known approximation in chemistry states that the rate of a reaction often doubles for
every 10°C increase in temperature. Use your data to test this rule. (Note: It is not necessarily
equal to 2.00; this is just an approximate value, and depends on the activation energy for the
reaction.)
CALCULATIONS:
Slope, m :
Activation Energy, Ea (kJ/mol) :
8
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 2 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Recommended textbooks for you
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning