Question 1

The following initial rate data were found for the reaction
2MnO4- + 5H2C2O4 + 6H+  2Mn2+ + 10CO2 + 8H2O 4- + 5H2C2O4 + 6H+  2Mn2+ + 10CO2 + 8H2O   -What is the value of the rate constant? A)  2  105 M • s-1 B)  2  105 M-2 • s-1 C)  200 M-2 • s-1 D)  2  10-4 M • s-1 E)  200 M-1 • s-1 " class="answers-bank-image d-inline" rel="preload" >
-What is the value of the rate constant?

Accepted Answer

A)   2  105 M • s-1
B)   2  105 M-2 • s-1
C)   200 M-2 • s-1
D)   2  10-4 M • s-1
E)   200 M-1 • s-1F) A) and B)
G) None of the above

Question 2

Tabulated below are initial rate data for the reaction 2Fe(CN) 63- + 2I-  2Fe(CN) 64- + I2 63- + 2I-  2Fe(CN) 64- + I2    What is the value of k? A)  103 M-3 s-1 B)  50 M-2 s-1 C)  10 M-2 s-1 D)  107 M-5 s-1 E)  none of these " class="answers-bank-image d-inline" rel="preload" >  What is the value of k?

Accepted Answer

A)   103 M-3 s-1
B)   50 M-2 s-1
C)   10 M-2 s-1
D)   107 M-5 s-1
E)   none of theseF) B) and D)
G) All of the above

Question 3

The oxidation of Cr3+ to CrO42- can be accomplished using Ce4+ in a buffered solution. The following data were obtained: 3+ to CrO42- can be accomplished using Ce4+ in a buffered solution. The following data were obtained:   -Determine the order in the rate law of the species Cr3+. A)  -2 B)  3 C)  1 D)  2 E)  -1 " class="answers-bank-image d-inline" rel="preload" >
-Determine the order in the rate law of the species Cr3+.

Accepted Answer

A)   -2
B)   3
C)   1
D)   2
E)   -1F) C) and D)
G) A) and B)

Question 4

A reaction represented by the equation
3OS1U1B12S1U1B0(g) $\rightarrow$2OS1U1B13S1U1B0(g)
was studied at a specific temperature, and the following data were collected. 
-What is the rate law for this reaction?

Accepted Answer

Rate = k[O...

Question 5

For the reaction
2A + B $\rightarrow$ products
the following mechanism is proposed:
A + B  M
A + M $\rightarrow$ products
Using the steady-state approximation, determine the rate law.

Accepted Answer

rate = k₁...

Question 6

For the reaction
CH3CHCH2(g) + HCl(g) $\rightarrow$ CH3CHClCH3(g)
a possible mechanism is  Derive the rate law for this reaction using this mechanism.

Accepted Answer

The answer of For the reaction
CH3CHCH2(g) + HCl(g) $\rightarrow$ CH3CHClCH3(g)
a...

Question 7

For the reaction aA  →\rightarrow→  products, select the reaction order(s)  that best fit(s)  the observations.
-The half-life decreases over time.

Accepted Answer

A)   second order in A
B)   first order in A
C)   zero order in A
D)   all of these
E)   none of these F) A) and D)
G) A) and B)

Question 8

When ethyl chloride, CH3CH2Cl, is dissolved in 1.0 M NaOH, it is converted into ethanol, CH3CH2OH, by the reaction CH3CH2Cl + OH-  →\rightarrow→  CH3CH2OH + Cl-
At 25°C the reaction is first order in CH3CH2Cl, and the rate constant is 1.0 * 10-3 s-1. If the activation parameters are A = 3.4 * 1014 s-1 and Ea = 100.0 kJ/mol, what will the rate constant be at 28°C? (R = 8.314 J/mol • K)

Accepted Answer

A)   3.8 * 1014 s-1
B)   1.1 *10-3 s-1
C)   8.9 *102 s-1
D)   9.2*0 10-3 s-1
E)   1.5 *10-3 s-1 F) B) and C)
G) C) and D)

Question 9

Initial rate data have been determined at a certain temperature for the gaseous reaction 2NO + 2H2  N2 + 2H2O 2  N2 + 2H2O   What is the numerical value of the rate constant? A)  1.1 B)  6.9 C)  2.2 D)  0.11 E)  0.35 " class="answers-bank-image d-inline" rel="preload" > What is the numerical value of the rate constant?

Accepted Answer

A)   1.1
B)   6.9
C)   2.2
D)   0.11
E)   0.35F) C) and D)
G) A) and C)

Question 10

What is the overall order of a reaction with the following rate law? Rate = [A] 2 [B] 1 [C] 0

Accepted Answer

A)   3
B)   2
C)   0
D)   1
E)   none of theseF) A) and C)
G) A) and E)

Question 11

The reaction of (CH3) 3CBr with hydroxide ion proceeds with the formation of (CH3) 3COH. (CH3) 3CBr (aq)  + OH- (aq)   (CH3) 3COH (aq)  + Br- (aq) 
The following data were obtained at 55°C. 3) 3CBr with hydroxide ion proceeds with the formation of (CH3) 3COH. (CH3) 3CBr (aq)  + OH- (aq)   (CH3) 3COH (aq)  + Br- (aq)  The following data were obtained at 55°C.   What will the initial rate (in mol/L • s)  be in Experiment 4? A)  18  10-3 B)  6.0  10-3 C)  9.0  10-3 D)  3.0  10-3 E)  none of these " class="answers-bank-image d-inline" rel="preload" > What will the initial rate (in mol/L • s)  be in Experiment 4?

Accepted Answer

A)   18  10-3
B)   6.0  10-3
C)   9.0  10-3
D)   3.0  10-3
E)   none of theseF) C) and D)
G) A) and B)

Question 12

Consider the second-order reaction aA  →\rightarrow→  products (which has a first half-life of 24 s) . If the concentration of A after 15.4 s is 0.40 M, determine the initial concentration of A.

Accepted Answer

A)   0.66 M
B)   0.30 M
C)   0.61 M
D)   0.15 M
E)   0.20 M F) A) and D)
G) A) and E)

Question 13

The reaction
H2SeO3(aq)  + 6I-(aq)  + 4H+(aq)   2I3-(aq)  + 3H2O(l)  + Se(s) 
was studied at 0°C by the method of initial rates: 2SeO3(aq)  + 6I-(aq)  + 4H+(aq)   2I3-(aq)  + 3H2O(l)  + Se(s)  was studied at 0°C by the method of initial rates:   -What is the numerical value of the rate constant? A)  4.2 B)  2.1  102 C)  5.2  105 D)  1.9  10-6 E)  none of these " class="answers-bank-image d-inline" rel="preload" >
-What is the numerical value of the rate constant?

Accepted Answer

A)   4.2
B)   2.1  102
C)   5.2  105
D)   1.9  10-6
E)   none of theseF) A) and C)
G) A) and D)

Question 14

The following initial rate data were found for the reaction
2MnO4- + 5H2C2O4 + 6H+  2Mn2+ + 10CO2 + 8H2O 4- + 5H2C2O4 + 6H+  2Mn2+ + 10CO2 + 8H2O   -The reaction A  B + C is known to be zero order in A with a rate constant of 5.0  10-2 mol/L • s at 25° C. An experiment was run at 25°C where [A]0 = 1.0  10-3 M. What is the integrated rate law? A)  [A] = kt B)  [A]0 - [A] = kt C)    D)  [A] - [A]0 = kt E)    " class="answers-bank-image d-inline" rel="preload" >
-The reaction A  B + C is known to be zero order in A with a rate constant of 5.0  10-2 mol/L • s at 25° C. An experiment was run at 25°C where [A]0 = 1.0  10-3 M. What is the integrated rate law?

Accepted Answer

A)   [A] = kt
B)   [A]0 - [A] = kt
C)   4- + 5H2C2O4 + 6H+  2Mn2+ + 10CO2 + 8H2O   -The reaction A  B + C is known to be zero order in A with a rate constant of 5.0  10-2 mol/L • s at 25° C. An experiment was run at 25°C where [A]0 = 1.0  10-3 M. What is the integrated rate law? 
A)   [A] = kt 
B)   [A]0 - [A] = kt 
C)     
D)   [A] - [A]0 = kt 
E)     " class="answers-bank-image d-inline" rel="preload" >
D)   [A] - [A]0 = kt
E)   4- + 5H2C2O4 + 6H+  2Mn2+ + 10CO2 + 8H2O   -The reaction A  B + C is known to be zero order in A with a rate constant of 5.0  10-2 mol/L • s at 25° C. An experiment was run at 25°C where [A]0 = 1.0  10-3 M. What is the integrated rate law? 
A)   [A] = kt 
B)   [A]0 - [A] = kt 
C)     
D)   [A] - [A]0 = kt 
E)     " class="answers-bank-image d-inline" rel="preload" >F) A) and B)
G) C) and D)

Question 15

In the reaction
3A(g) + B(g) $\rightarrow$ 2C(g) + 4D(g)
the following data were collected at 100° C.  Let Rate  and use these data.
A) Determine the differential rate law. Be sure to label your plots carefully and show your work.
B)Calculate the value of the rate constant k for this reaction at 100°C.
C) Calculate [A] and [B] for experiment 1 after 5.00 *102 s has elapsed.
D) Which of the following mechanisms could be correct for this reaction? Support your answer.

Accepted Answer

A) Rate = k[A][B]
B) 1.43 *10^-

Question 16

At 760 K, acetaldehyde decomposes to carbon monoxide and methane: CH3CHO  →\rightarrow→ CH4 + CO
A plot of ln [CH3CHO] versus time is linear. After 530 s, [CH3CHO] decreases to one half of its initial value of 0.10 M. What is the rate law for the reaction?

Accepted Answer

A)   3CHO  \rightarrow CH4 + CO A plot of ln [CH3CHO] versus time is linear. After 530 s, [CH3CHO] decreases to one half of its initial value of 0.10 M. What is the rate law for the reaction? 
A)     
B)     
C)     
D)     
E)      " class="answers-bank-image d-inline" rel="preload" >
B)   3CHO  \rightarrow CH4 + CO A plot of ln [CH3CHO] versus time is linear. After 530 s, [CH3CHO] decreases to one half of its initial value of 0.10 M. What is the rate law for the reaction? 
A)     
B)     
C)     
D)     
E)      " class="answers-bank-image d-inline" rel="preload" >
C)   3CHO  \rightarrow CH4 + CO A plot of ln [CH3CHO] versus time is linear. After 530 s, [CH3CHO] decreases to one half of its initial value of 0.10 M. What is the rate law for the reaction? 
A)     
B)     
C)     
D)     
E)      " class="answers-bank-image d-inline" rel="preload" >
D)   3CHO  \rightarrow CH4 + CO A plot of ln [CH3CHO] versus time is linear. After 530 s, [CH3CHO] decreases to one half of its initial value of 0.10 M. What is the rate law for the reaction? 
A)     
B)     
C)     
D)     
E)      " class="answers-bank-image d-inline" rel="preload" >
E)   3CHO  \rightarrow CH4 + CO A plot of ln [CH3CHO] versus time is linear. After 530 s, [CH3CHO] decreases to one half of its initial value of 0.10 M. What is the rate law for the reaction? 
A)     
B)     
C)     
D)     
E)      " class="answers-bank-image d-inline" rel="preload" > F) A) and B)
G) C) and D)

Question 17

Calculate the value of k2 where Rate = 2 where Rate =   k2[B]2 A)  0.75 L/mol • s B)  2.2 L/mol • s C)  0.21 L/mol • s D)  1.9 L/mol • s E)  none of these " class="answers-bank-image d-inline" rel="preload" > k2[B]2

Accepted Answer

A)   0.75 L/mol • s
B)   2.2 L/mol • s
C)   0.21 L/mol • s
D)   1.9 L/mol • s
E)   none of theseF) B) and D)
G) B) and E)

Question 18

For the reaction 2N2O5(g)   →\rightarrow→  4NO2(g)  + O2(g) , the following data were collected. 2O5(g)   \rightarrow  4NO2(g)  + O2(g) , the following data were collected.   -The order of this reaction in N2O5 is A)  0 B)  1 C)  2 D)  3 E)  none of these  " class="answers-bank-image d-inline" rel="preload" >
-The order of this reaction in N2O5 is

Accepted Answer

A)   0
B)   1
C)   2
D)   3
E)   none of these F) A) and D)
G) A) and E)

Question 19

A general reaction written as 2A + 2B  C + 2D is studied and yields the following data.  C + 2D is studied and yields the following data.   -What is the overall order of the reaction? A)  0 B)  2 C)  3 D)  4 E)  1 " class="answers-bank-image d-inline" rel="preload" >
-What is the overall order of the reaction?

Accepted Answer

A)   0
B)   2
C)   3
D)   4
E)   1F) A) and E)
G) A) and D)

Question 20

The following initial rate data were found for the reaction
2MnO4- + 5H2C2O4 + 6H+  2Mn2+ + 10CO2 + 8H2O 4- + 5H2C2O4 + 6H+  2Mn2+ + 10CO2 + 8H2O   -Which of the following is the correct rate law? A)  Rate = k[MnO4-][H2C2O4][H+] B)  Rate = k[MnO4-]2[H2C2O4][H+] C)  Rate = k[MnO4-]2[H2C2O4] D)  Rate = k[MnO4-][H2C2O4]2 E)  Rate = k[MnO4-]2[H2C2O4]5[H+]6 " class="answers-bank-image d-inline" rel="preload" >
-Which of the following is the correct rate law?

Accepted Answer

A)   Rate = k[MnO4-][H2C2O4][H+]
B)   Rate = k[MnO4-]2[H2C2O4][H+]
C)   Rate = k[MnO4-]2[H2C2O4]
D)   Rate = k[MnO4-][H2C2O4]2
E)   Rate = k[MnO4-]2[H2C2O4]5[H+]6F) None of the above
G) All of the above

Exam 15: Chemical Kinetics

The reaction of (CH₃) ₃CBr with hydroxide ion proceeds with the formation of (CH₃) ₃COH. (CH₃) ₃CBr (aq) + OH^-(aq)  (CH₃) ₃COH (aq) + Br^-(aq) The following data were obtained at 55°C. What will the initial rate (in mol/L • s) be in Experiment 4?

Correct Answer
verified

Tabulated below are initial rate data for the reaction 2Fe(CN) ₆³^- + 2I^-  2Fe(CN) ₆⁴^- + I₂ What is the value of k?

Correct Answer
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The following initial rate data were found for the reaction 2MnO₄^- + 5H₂C₂O₄ + 6H⁺  2Mn²⁺ + 10CO₂ + 8H₂O -What is the value of the rate constant?

Correct Answer
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For the reaction aA $\rightarrow$ products, select the reaction order(s) that best fit(s) the observations. -The half-life decreases over time.

Correct Answer
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Correct Answer
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The oxidation of Cr³⁺ to CrO₄²^- can be accomplished using Ce⁴⁺ in a buffered solution. The following data were obtained: -Determine the order in the rate law of the species Cr³⁺.

Correct Answer
verified

Correct Answer
verified
Rate = k[O...
View Answer

The following initial rate data were found for the reaction 2MnO₄^- + 5H₂C₂O₄ + 6H⁺  2Mn²⁺ + 10CO₂ + 8H₂O -Which of the following is the correct rate law?

Correct Answer
verified

The reaction H₂SeO₃(aq) + 6I^-(aq) + 4H⁺(aq)  2I₃^-(aq) + 3H₂O(l) + Se(s) was studied at 0°C by the method of initial rates: -What is the numerical value of the rate constant?

Correct Answer
verified

Consider the second-order reaction aA $\rightarrow$ products (which has a first half-life of 24 s) . If the concentration of A after 15.4 s is 0.40 M, determine the initial concentration of A.

Correct Answer
verified

Correct Answer
verified

At 760 K, acetaldehyde decomposes to carbon monoxide and methane: CH₃CHO $\rightarrow$ CH₄ + CO A plot of ln [CH₃CHO] versus time is linear. After 530 s, [CH₃CHO] decreases to one half of its initial value of 0.10 M. What is the rate law for the reaction?

Correct Answer
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Correct Answer
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A) Rate = k[A][B]
B) 1.43 *10^{-View Answer}

Correct Answer
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Calculate the value of k₂ where Rate = k₂[B]²

Correct Answer
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Correct Answer
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Correct Answer
verified
rate = k₁...
View Answer

A general reaction written as 2A + 2B  C + 2D is studied and yields the following data. -What is the overall order of the reaction?

Correct Answer
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What is the overall order of a reaction with the following rate law? Rate = [A]² [B]¹ [C]⁰

Correct Answer
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Initial rate data have been determined at a certain temperature for the gaseous reaction 2NO + 2H₂  N₂ + 2H₂O What is the numerical value of the rate constant?

Correct Answer
verified

Exam 15: Chemical Kinetics

The reaction of (CH3) 3CBr with hydroxide ion proceeds with the formation of (CH3) 3COH. (CH3) 3CBr (aq) + OH- (aq)  (CH3) 3COH (aq) + Br- (aq) The following data were obtained at 55°C. What will the initial rate (in mol/L • s) be in Experiment 4?

Correct AnswerverifiedShow Answer

Tabulated below are initial rate data for the reaction 2Fe(CN) 63- + 2I-  2Fe(CN) 64- + I2 What is the value of k?

Correct AnswerverifiedShow Answer

The following initial rate data were found for the reaction 2MnO4- + 5H2C2O4 + 6H+  2Mn2+ + 10CO2 + 8H2O -What is the value of the rate constant?

Correct AnswerverifiedShow Answer

For the reaction aA →\rightarrow→ products, select the reaction order(s) that best fit(s) the observations. -The half-life decreases over time.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The oxidation of Cr3+ to CrO42- can be accomplished using Ce4+ in a buffered solution. The following data were obtained: -Determine the order in the rate law of the species Cr3+.

Correct AnswerverifiedShow Answer

A reaction represented by the equation 3O2(g) →\rightarrow→ 2O3(g) was studied at a specific temperature, and the following data were collected. -What is the rate law for this reaction?

Correct AnswerverifiedRate = k[O...View AnswerShow Answer

The following initial rate data were found for the reaction 2MnO4- + 5H2C2O4 + 6H+  2Mn2+ + 10CO2 + 8H2O -Which of the following is the correct rate law?

Correct AnswerverifiedShow Answer

The reaction H2SeO3(aq) + 6I-(aq) + 4H+(aq)  2I3-(aq) + 3H2O(l) + Se(s) was studied at 0°C by the method of initial rates: -What is the numerical value of the rate constant?

Correct AnswerverifiedShow Answer

Consider the second-order reaction aA →\rightarrow→ products (which has a first half-life of 24 s) . If the concentration of A after 15.4 s is 0.40 M, determine the initial concentration of A.

Correct AnswerverifiedShow Answer

For the reaction CH3CHCH2(g) + HCl(g) →\rightarrow→ CH3CHClCH3(g) a possible mechanism is Derive the rate law for this reaction using this mechanism.

Correct AnswerverifiedShow Answer

At 760 K, acetaldehyde decomposes to carbon monoxide and methane: CH3CHO →\rightarrow→ CH4 + CO A plot of ln [CH3CHO] versus time is linear. After 530 s, [CH3CHO] decreases to one half of its initial value of 0.10 M. What is the rate law for the reaction?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedA) Rate = k[A][B]B) 1.43 *10-View AnswerShow Answer

For the reaction 2N2O5(g) →\rightarrow→ 4NO2(g) + O2(g) , the following data were collected. -The order of this reaction in N2O5 is

Correct AnswerverifiedShow Answer

Calculate the value of k2 where Rate = k2[B]2

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

For the reaction 2A + B →\rightarrow→ products the following mechanism is proposed: A + B M A + M →\rightarrow→ products Using the steady-state approximation, determine the rate law.

Correct Answerverifiedrate = k1...View AnswerShow Answer

A general reaction written as 2A + 2B  C + 2D is studied and yields the following data. -What is the overall order of the reaction?

Correct AnswerverifiedShow Answer

What is the overall order of a reaction with the following rate law? Rate = [A] 2 [B] 1 [C] 0

Correct AnswerverifiedShow Answer

Initial rate data have been determined at a certain temperature for the gaseous reaction 2NO + 2H2  N2 + 2H2O What is the numerical value of the rate constant?

Correct AnswerverifiedShow Answer

The reaction of (CH₃) ₃CBr with hydroxide ion proceeds with the formation of (CH₃) ₃COH. (CH₃) ₃CBr (aq) + OH^-(aq)  (CH₃) ₃COH (aq) + Br^-(aq) The following data were obtained at 55°C. What will the initial rate (in mol/L • s) be in Experiment 4?

Correct Answer
verified

Tabulated below are initial rate data for the reaction 2Fe(CN) ₆³^- + 2I^-  2Fe(CN) ₆⁴^- + I₂ What is the value of k?

Correct Answer
verified

The following initial rate data were found for the reaction 2MnO₄^- + 5H₂C₂O₄ + 6H⁺  2Mn²⁺ + 10CO₂ + 8H₂O -What is the value of the rate constant?

Correct Answer
verified

For the reaction aA $\rightarrow$ products, select the reaction order(s) that best fit(s) the observations. -The half-life decreases over time.

Correct Answer
verified

Correct Answer
verified

The oxidation of Cr³⁺ to CrO₄²^- can be accomplished using Ce⁴⁺ in a buffered solution. The following data were obtained: -Determine the order in the rate law of the species Cr³⁺.

Correct Answer
verified

Correct Answer
verified
Rate = k[O...
View Answer

The following initial rate data were found for the reaction 2MnO₄^- + 5H₂C₂O₄ + 6H⁺  2Mn²⁺ + 10CO₂ + 8H₂O -Which of the following is the correct rate law?

Correct Answer
verified

The reaction H₂SeO₃(aq) + 6I^-(aq) + 4H⁺(aq)  2I₃^-(aq) + 3H₂O(l) + Se(s) was studied at 0°C by the method of initial rates: -What is the numerical value of the rate constant?

Correct Answer
verified

Consider the second-order reaction aA $\rightarrow$ products (which has a first half-life of 24 s) . If the concentration of A after 15.4 s is 0.40 M, determine the initial concentration of A.

Correct Answer
verified

Correct Answer
verified

At 760 K, acetaldehyde decomposes to carbon monoxide and methane: CH₃CHO $\rightarrow$ CH₄ + CO A plot of ln [CH₃CHO] versus time is linear. After 530 s, [CH₃CHO] decreases to one half of its initial value of 0.10 M. What is the rate law for the reaction?

Correct Answer
verified

Correct Answer
verified
A) Rate = k[A][B]
B) 1.43 *10^{-View Answer}

Correct Answer
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Calculate the value of k₂ where Rate = k₂[B]²

Correct Answer
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Correct Answer
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Correct Answer
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rate = k₁...
View Answer

Correct Answer
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What is the overall order of a reaction with the following rate law? Rate = [A]² [B]¹ [C]⁰

Correct Answer
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Initial rate data have been determined at a certain temperature for the gaseous reaction 2NO + 2H₂  N₂ + 2H₂O What is the numerical value of the rate constant?

Correct Answer
verified