Question
In: Chemistry
The following set of data was obtained by the method of initial rates for the reaction:...
The following set of data was obtained by the method of initial rates for the reaction: 2NO(g) + O2 (g) ----> 2NO2(g)
| Experiment # | [NO], M | [O2], M | Initial Rate, M/s |
| 1 | 0.0126 | 0.0125 | 1.41 x 10^-2 |
| 2 | 0.0252 | 0.0250 | 1.13 x 10^-1 |
| 3 | 0.0252 | 0.0125 | 5.64 x 10^-2 |
a) What is the rate law for the reaction?
b) If you triple the concentration of both reactants, what will happen to the rate?
c) What is the value of the rate constant?
Solutions
Expert Solution
2NO(g) + O2 (g) ----> 2NO2(g)
Rate = K[NO]^m[O2]^n
1.41*10^-2 = K(0.0126)^m(0.0125)^n --------------------> 1
1.13*10^-1 = K(0.0252)^m(0.025)^n ----------------------> 2
5.64*10^-2 = K(0.0252)^m (0.0125)^n ------------------> 3
equation 1 divide by equation 3
1.41*10^-2/5.64*10^-2 = K(0.0126)^m(0.0125)^n/K(0.0252)^m (0.0125)^n
0.25 = (0.0126/0.0252)^m
0.25 = (0.5)^m
(0.5)^2 = (0.5)^m
m = 2
equation 2 divide by equation 3
1.13*10^-1/5.64*10^-2 = K(0.0252)^m(0.025)^n/K(0.0252)^m (0.0125)^n
2 = (0.025/0.0125)^n
2^1 = (2)^n
n = 1
Rate law
Rate = K[NO]^2[O2]^1
b. Rate = K(3NO)^2(3O2)^1
Rate = 27K[NO]^2[O2]^1
Rate of reaction increases 27 times
c.
Rate = K[NO]^2[O2]^1
1.41*10^-2 = K(0.0126)^2(0.0125)^1
K = 1.41*10^-2/(0.0126)^2(0.0125)^1
= 7105 M^-2 sec^-1
queen_honey_blossom answered 2 years agoRelated Solutions
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Initial reaction
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1
0.2790
0.1670
0.0334
1.190
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rates with initial concentrations of A and B is given below. [A]o
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[B] (M)
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Student ID
Exam score
Math confidence
Z exam
Z math conf
A
60
1
A
-.77
-1.61
B
80
5
B
.77
1.36
C
70
3
C
0
-0.12
D
50
2
D
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E
90
4
E
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0.62
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70
4
F
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0.62
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final exam scores
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Student ID
Exam score
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Z exam
Z class missed
A
90
0
A
1.46
-1.46
B
80
1
B
0.88
-0.88
C
70
3
C
0.29
0.29
D
60
2
D
-0.29
-0.29
E
50
4
E
-0.87
0.88
F
40
5
F
-1.46
1.46
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65
2.5
SD
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9.
a....
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reaction where A is converted to B.
1)Determine the order of the
reaction
Time (min)
0
10
20
40
60
80 100
A (mg/lit)
100
74
55
30
17
9 5
2) Consider a first order reaction taking place in a batch
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Develop an expression for the
detention time in the reactor.
The following data set is obtained by a randomly selected sample of 93 employees working at...
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of 93 employees working at a bank.
SALARY
EDUC
EXPER
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39000
12
0
1
40200
10
44
7
42900
12
5
30
43800
8
6
7
43800
8
8
6
43800
12
0
7
43800
12
0
10
43800
12
5
6
44400
15
75
2
45000
8
52
3
45000
12
8
19
46200
12
52
3
48000
8
70
20
48000
12
6
23
48000
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The initial rates listed in the following table were measured for the reaction between nitrogen dioxide...
The initial rates listed in the following table were measured
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Initial [CO][CO]
Initial Reaction Rate (M/sM/s)
1
0.100
0.100
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0.150
0.100
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3
0.200
0.200
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Express your answer to three significant figures and include the
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