The activity of penicillin is proportional to its concentration. This antibiotic decomposes slowly when stored in pH 7 at room temperature. The time dependence of this decomposition is given below. Does this decomposition follow first or second order kinetics? (50 points) sone = Act x m Time (weeks) Activity 10100 8180 6900 5380 3870 8. 2000 10 1330 12 898 15 403

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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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This is not a exam/ test question:) you can see that our prof has written sth on this question, it is a question that he wants us to practice on our own in lecture. Thanks

Topic related to 1st order/ 2nd order kinetics, need excel/graph to do this question, need TWO plots to check whether they are 1st/2nd order

concentration = activity * m (concentration is proportional to activity plus a constant m)

1/[A] =1/[A]+ Kt

1/[Activity* m] = 1/[Activity0 *m] +Kt

1/[Activity] =1/ [Activity]0 + mKt

  • Do we follow the equations of zeroth, 1st, 2nd order reactions? 
  • What is the key idea to determine whether this data gives 1st or 2nd order kinetics?
  • Our prof was saying that if it's linear graph, means it is in correct order. BUT i have plotted 3 datas, two of them looks kinda linear to me. (the 2nd order and zeroth order graph are similar) If we are choosing from zeroth/2nd order, how do we determine its order if it's line is similar in linearity?
1/Activity
0.006
Time (weeks)
In[Activity]- 1st order
9.22029070282935
0.005
1
9.00944742959679
2
8.83927669058535
0.003
8.59044365315583
8.26100978602383
0.002
7.60090245954208
10
7.1929342212158
1
2
3
8 10 12 15 20
12
6.8001700683022
Time (weeks)
1/ Activity - 2nd order
15
5.99893656194668
0.000099009900990099
20
5.11799381241676
1
0.000122249388753056
- Untitled 1
0.000144927536231884
0.000185873605947955
11000
0.000258397932816537
8250
8
0.0005
5500
10
0.00075187969924812
12
0.00111358574610245
2750
15
0.00248138957816377
1.
2
3
8
10 12 15 20
20
0.00591715976331361
- In Activity
Time (weeks)
Activity - zeroth order
10
10100
1
8180
7.5
2
6900
5380
3870
8
2000
2.5
10
1330
12
898
0 1
2
3
5
8
10
12
15
20
LO
Transcribed Image Text:1/Activity 0.006 Time (weeks) In[Activity]- 1st order 9.22029070282935 0.005 1 9.00944742959679 2 8.83927669058535 0.003 8.59044365315583 8.26100978602383 0.002 7.60090245954208 10 7.1929342212158 1 2 3 8 10 12 15 20 12 6.8001700683022 Time (weeks) 1/ Activity - 2nd order 15 5.99893656194668 0.000099009900990099 20 5.11799381241676 1 0.000122249388753056 - Untitled 1 0.000144927536231884 0.000185873605947955 11000 0.000258397932816537 8250 8 0.0005 5500 10 0.00075187969924812 12 0.00111358574610245 2750 15 0.00248138957816377 1. 2 3 8 10 12 15 20 20 0.00591715976331361 - In Activity Time (weeks) Activity - zeroth order 10 10100 1 8180 7.5 2 6900 5380 3870 8 2000 2.5 10 1330 12 898 0 1 2 3 5 8 10 12 15 20 LO
The activity of penicillin is proportional to its concentration. This antibiotic decomposes slowly when stored in
pH 7 at room temperature. The time dependence of this decomposition is given below. Does this
decomposition follow first or second order kinetics? (50 points)
cone= Act x m
Act
Time (weeks)
Activity
10100
8180
6900
5380
3870
8.
2000
10
1330
12
898
15
403
20
167
Transcribed Image Text:The activity of penicillin is proportional to its concentration. This antibiotic decomposes slowly when stored in pH 7 at room temperature. The time dependence of this decomposition is given below. Does this decomposition follow first or second order kinetics? (50 points) cone= Act x m Act Time (weeks) Activity 10100 8180 6900 5380 3870 8. 2000 10 1330 12 898 15 403 20 167
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