B. Temperature effects on reaction rates 1. Results 1average 2 3" 4 time (sec) 41.8 24.2 11.7 89.4 1/time (sec-¹) 0.046 0.0413 0.0855 0.0112 In(time) 3.379 3.186 2.459 4.493 Temp (°C) 29.5 35 40.8 12.8 Temp (K) 302.68 308.15 313.95 285.95 1/Temp (1/K) 0.003309 0.003245 0.003185 0.003497 2. Answer these questions: a. Show mathematically that a plot of In(time) versus 1/Temp should give a straight line with a slope of E/R. b. Graph In(time) vs. 1/Temp and determine the slope. From the slope calculate the activation energy of the reaction. 1/Temp 0.00355 0.0035 0.00345 0.0034 0.00335 0.0033 0.00325 0.0032 0.00315 Chart Title y = 0.0002x + 0.0028 R² = 0.9686 0.0031 0 1 N In (Time) E 4 5 3. Answer these questions: a. From the graph, determine the reaction time at 20 °C and 30 °C. b. For this particular reaction, how good is the rule of thumb that "a 10 °C increase should double the reaction rate"? Explain your answer.
B. Temperature effects on reaction rates 1. Results 1average 2 3" 4 time (sec) 41.8 24.2 11.7 89.4 1/time (sec-¹) 0.046 0.0413 0.0855 0.0112 In(time) 3.379 3.186 2.459 4.493 Temp (°C) 29.5 35 40.8 12.8 Temp (K) 302.68 308.15 313.95 285.95 1/Temp (1/K) 0.003309 0.003245 0.003185 0.003497 2. Answer these questions: a. Show mathematically that a plot of In(time) versus 1/Temp should give a straight line with a slope of E/R. b. Graph In(time) vs. 1/Temp and determine the slope. From the slope calculate the activation energy of the reaction. 1/Temp 0.00355 0.0035 0.00345 0.0034 0.00335 0.0033 0.00325 0.0032 0.00315 Chart Title y = 0.0002x + 0.0028 R² = 0.9686 0.0031 0 1 N In (Time) E 4 5 3. Answer these questions: a. From the graph, determine the reaction time at 20 °C and 30 °C. b. For this particular reaction, how good is the rule of thumb that "a 10 °C increase should double the reaction rate"? Explain your answer.
Chapter30: Kinetic Methods Of Analysis
Section: Chapter Questions
Problem 30.3QAP
Related questions
Question
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Please help me with #2b & #3 using the data.

Transcribed Image Text:B. Temperature effects on reaction rates
1. Results
1average
2
3"
4
time (sec)
41.8
24.2
11.7
89.4
1/time (sec-¹)
0.046
0.0413
0.0855
0.0112
In(time)
3.379
3.186
2.459
4.493
Temp (°C)
29.5
35
40.8
12.8
Temp (K)
302.68
308.15
313.95
285.95
1/Temp (1/K)
0.003309
0.003245
0.003185
0.003497
2. Answer these questions:
a. Show mathematically that a plot of In(time) versus 1/Temp should give a straight line
with a slope of E/R.
b. Graph In(time) vs. 1/Temp and determine the slope. From the slope calculate the
activation energy of the reaction.
1/Temp
0.00355
0.0035
0.00345
0.0034
0.00335
0.0033
0.00325
0.0032
0.00315
Chart Title
y = 0.0002x + 0.0028
R² = 0.9686
0.0031
0
1
N
In (Time)
E
4
5
3. Answer these questions:
a. From the graph, determine the reaction time at 20 °C and 30 °C.
b. For this particular reaction, how good is the rule of thumb that "a 10 °C increase
should double the reaction rate"? Explain your answer.
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