Question 1

NO2 contributes to the "brown haze" associated with photochemical smog events. At what time of day is NO2 concentration highest?

Accepted Answer

A)  in the morning before rush hour
B)  in the morning just after rush hour
C)  midmorning
D)  noon
E)  midafternoonF) None of the above
G) D) and E)

Question 2

The energy profiles for four different reactions are shown below. The scales are the same for each. Which reaction requires the least energetic collisions to reach the transition state?

Accepted Answer

A)  a
B)  b
C)  c
D)  dE) A) and D)
F) All of the above

Question 3

The mechanism for the first-order reaction (aq)  is proposed to be: Step 1:   (slow)  Step 2:   (fast)  Identify the catalyst in the reaction. A) H2O2 B) OI C) I D) H2O E) O2" class="answers-bank-image d-inline" rel="preload" > in the presence of I(aq)  is proposed to be: Step 1: (aq)  is proposed to be: Step 1:   (slow)  Step 2:   (fast)  Identify the catalyst in the reaction. A) H2O2 B) OI C) I D) H2O E) O2" class="answers-bank-image d-inline" rel="preload" > (slow) 
Step 2: (aq)  is proposed to be: Step 1:   (slow)  Step 2:   (fast)  Identify the catalyst in the reaction. A) H2O2 B) OI C) I D) H2O E) O2" class="answers-bank-image d-inline" rel="preload" > (fast) 
Identify the catalyst in the reaction.

Accepted Answer

A)  H2O2
B)  OI
C)  I
D)  H2O
E)  O2F) B) and E)
G) B) and D)

Question 4

The rate of popcorn popping at different temperatures was found to be described by the Arrhenius equation. How many times faster does the popcorn pop at 210°C compared with that at 180°C when the activation energy is 167 kJ/mol?

Accepted Answer

The answer of The rate of popcorn popping at different...

Question 5

One reaction that occurs in an automobile catalytic converter is the conversion of carbon monoxide to carbon dioxide. How is the rate of this reaction related to the rate at which the concentration of a reactant or product changes? 2CO(g)   O2(g)  →2CO2(g) 
I. Rate   O2(g)  →2CO2(g)  I. Rate    II. Rate    III. Rate    IV. Rate     A) I only B) II only C) III only D) II and III only E) II, III, and IV only" class="answers-bank-image d-inline" rel="preload" > II. Rate   O2(g)  →2CO2(g)  I. Rate    II. Rate    III. Rate    IV. Rate     A) I only B) II only C) III only D) II and III only E) II, III, and IV only" class="answers-bank-image d-inline" rel="preload" > III. Rate   O2(g)  →2CO2(g)  I. Rate    II. Rate    III. Rate    IV. Rate     A) I only B) II only C) III only D) II and III only E) II, III, and IV only" class="answers-bank-image d-inline" rel="preload" > IV. Rate   O2(g)  →2CO2(g)  I. Rate    II. Rate    III. Rate    IV. Rate     A) I only B) II only C) III only D) II and III only E) II, III, and IV only" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  I only
B)  II only
C)  III only
D)  II and III only
E)  II, III, and IV onlyF) A) and B)
G) C) and D)

Question 6

The energy needed to form an activated complex is called ________

Accepted Answer

A)  collision energy.
B)  kinetic energy.
C)  activation energy.
D)  potential energy.
E)  thermodynamic energy.F) B) and C)
G) A) and E)

Question 7

One reaction that occurs in an automobile catalytic converter is the conversion of nitrogen monoxide to nitrogen and oxygen. How could the rate of this reaction be expressed correctly in terms of the rate at which the concentration of a reactant or product changes? 2NO(g)  N2(g)   O2(g)  A) Rate     B) Rate     C) Rate    D) Rate     E) Rate   " class="answers-bank-image d-inline" rel="preload" > N2(g)   O2(g)

Accepted Answer

A)  Rate  N2(g)   O2(g)  
A)  Rate     
B)  Rate     
C)  Rate    
D)  Rate     
E)  Rate   " class="answers-bank-image d-inline" rel="preload" > 
B)  Rate  N2(g)   O2(g)  
A)  Rate     
B)  Rate     
C)  Rate    
D)  Rate     
E)  Rate   " class="answers-bank-image d-inline" rel="preload" > 
C)  Rate  N2(g)   O2(g)  
A)  Rate     
B)  Rate     
C)  Rate    
D)  Rate     
E)  Rate   " class="answers-bank-image d-inline" rel="preload" >
D)  Rate  N2(g)   O2(g)  
A)  Rate     
B)  Rate     
C)  Rate    
D)  Rate     
E)  Rate   " class="answers-bank-image d-inline" rel="preload" > 
E)  Rate  N2(g)   O2(g)  
A)  Rate     
B)  Rate     
C)  Rate    
D)  Rate     
E)  Rate   " class="answers-bank-image d-inline" rel="preload" >F) B) and E)
G) All of the above

Question 8

Given the following data for the reaction A B, determine the frequency factor, A, of the reaction. k (M/s)  T (K)  2) 04  104 250 6) 78  103 400 A) 2.3 B) 5.3 C) 0.99 D) 0.63 E) 0.85" class="answers-bank-image d-inline" rel="preload" > B, determine the frequency factor, A, of the reaction. k (M/s) 
T (K) 
2) 04  104
250
6) 78  103
400

Accepted Answer

A)  2.3
B)  5.3
C)  0.99
D)  0.63
E)  0.85F) D) and E)
G) A) and E)

Question 9

A scientist conducts an experiment to determine the rate of the following reaction: 2 was 0.150 M and the concentration of H2 was 0.050 M after 2.10 s, what is the average rate of the reaction? A) 0.048 M/s B) 0.016 M/s C) 0.144 M/s D) 0.072 M/s E) 0.032 M/s" class="answers-bank-image d-inline" rel="preload" > If the initial concentration of H2 was 0.150 M and the concentration of H2 was 0.050 M after 2.10 s, what is the average rate of the reaction?

Accepted Answer

A)  0.048 M/s
B)  0.016 M/s
C)  0.144 M/s
D)  0.072 M/s
E)  0.032 M/sF) A) and B)
G) A) and C)

Question 10

The steps in a reaction mechanism are as follows. Which species is acting as a catalyst? Step 1:  B) Tl C) Ce3 D) Ag2 E) Tl3" class="answers-bank-image d-inline" rel="preload" > Step 2:  B) Tl C) Ce3 D) Ag2 E) Tl3" class="answers-bank-image d-inline" rel="preload" > Step 3:  B) Tl C) Ce3 D) Ag2 E) Tl3" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  Ag
B)  Tl
C)  Ce3
D)  Ag2
E)  Tl3F) A) and B)
G) B) and D)

Question 11

Given the following data for the reaction A B, determine the frequency factor, A, of the reaction.   A) (0.75)  B) (0.719)  C) (2.05)  D) (0.287)  E) (0.287) " class="answers-bank-image d-inline" rel="preload" > B, determine the frequency factor, A, of the reaction. B, determine the frequency factor, A, of the reaction.   A) (0.75)  B) (0.719)  C) (2.05)  D) (0.287)  E) (0.287) " class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  (0.75) 
B)  (0.719) 
C)  (2.05) 
D)  (0.287) 
E)  (0.287) F) A) and C)
G) All of the above

Question 12

The mechanism for the reaction (aq)  is proposed to be: Step 1:   (slow)  Step 2:   (fast)  What is the molecularity of the rate-determining step? A) zero molecular B) unimolecular C) bimolecular D) termolecular E) More information is needed to answer this question." class="answers-bank-image d-inline" rel="preload" > in the presence of I(aq)  is proposed to be: Step 1: (aq)  is proposed to be: Step 1:   (slow)  Step 2:   (fast)  What is the molecularity of the rate-determining step? A) zero molecular B) unimolecular C) bimolecular D) termolecular E) More information is needed to answer this question." class="answers-bank-image d-inline" rel="preload" > (slow) 
Step 2: (aq)  is proposed to be: Step 1:   (slow)  Step 2:   (fast)  What is the molecularity of the rate-determining step? A) zero molecular B) unimolecular C) bimolecular D) termolecular E) More information is needed to answer this question." class="answers-bank-image d-inline" rel="preload" > (fast) 
What is the molecularity of the rate-determining step?

Accepted Answer

A)  zero molecular
B)  unimolecular
C)  bimolecular
D)  termolecular
E)  More information is needed to answer this question.F) C) and D)
G) All of the above

Question 13

N2O5 is used as a source of NO2 in chemical reactions. The compound decomposes in a first order reaction. If the initial concentration of N2O5  0.400 M, and the concentration is 0.025 M after 120 seconds, what is the rate constant k of the reaction?

Accepted Answer

A)  7.50 s1
B)  333 s1
C)  2.77 s1
D)  2.31  102 s1
E)  5.21  104 s1F) All of the above
G) C) and D)

Question 14

Indicate which of the following compounds is a component of photochemical smog.

Accepted Answer

A)  H2O
B)  CO2
C)  N2O
D)  O3
E)  COF) B) and E)
G) D) and E)

Question 15

The reaction A(g)   B(g)   B(g)    C(g)  has the following rate law: Rate  k[A]2[B]. If the concentration of A is tripled while the concentration of B is doubled, the rate will increase by a factor of ________. A) 9 B) 18 C) 12 D) 6 E) 24" class="answers-bank-image d-inline" rel="preload" > C(g)  has the following rate law: Rate  k[A]2[B]. If the concentration of A is tripled while the concentration of B is doubled, the rate will increase by a factor of ________.

Accepted Answer

A)  9
B)  18
C)  12
D)  6
E)  24F) B) and C)
G) A) and E)

Question 16

Collision theory assumes that the rate of a reaction depends on ________

Accepted Answer

A)  the energy of collisions.
B)  the orientation of colliding molecules.
C)  the energy of collisions and the orientation of colliding molecules.
D)  the change in energy between the products and the reactants.
E)  the change in free energy between the reactants and products.F) None of the above
G) All of the above

Question 17

A scientist conducts an experiment to determine the rate of the following reaction:  If the initial concentration of NO was 0.00 M and the concentration of NO was 0.050 M after 0.100 s, what is the average rate of the reaction?

Accepted Answer

A)  0.500 M/s
B)  1.00 M/s
C)  5.00 M/s
D)  10.0 M/s
E)  0.250 M/sF) A) and B)
G) B) and D)

Question 18

The device in automobiles that has decreased NO and partially oxidized hydrocarbons from exhaust gases is termed a(n) ________ .

Accepted Answer

The answer of The device in automobiles that has decreased...

Question 19

For the reaction 2A  3B  3B   4C  5D, the rate of the reaction in terms of A would be written as ________ A) (  )  B) (-      )  C) (   )  D)  (     )  E) (   ) " class="answers-bank-image d-inline" rel="preload" > 4C  5D, the rate of the reaction in terms of A would be written as ________

Accepted Answer

A)  ( 3B   4C  5D, the rate of the reaction in terms of A would be written as ________ 
A)  (  )  
B)  (-      )  
C)  (   )  
D)   (     )  
E)  (   ) " class="answers-bank-image d-inline" rel="preload" > ) 
B)  (-  3B   4C  5D, the rate of the reaction in terms of A would be written as ________ 
A)  (  )  
B)  (-      )  
C)  (   )  
D)   (     )  
E)  (   ) " class="answers-bank-image d-inline" rel="preload" >   3B   4C  5D, the rate of the reaction in terms of A would be written as ________ 
A)  (  )  
B)  (-      )  
C)  (   )  
D)   (     )  
E)  (   ) " class="answers-bank-image d-inline" rel="preload" > ) 
C)  (  3B   4C  5D, the rate of the reaction in terms of A would be written as ________ 
A)  (  )  
B)  (-      )  
C)  (   )  
D)   (     )  
E)  (   ) " class="answers-bank-image d-inline" rel="preload" > ) 
D)   ( 3B   4C  5D, the rate of the reaction in terms of A would be written as ________ 
A)  (  )  
B)  (-      )  
C)  (   )  
D)   (     )  
E)  (   ) " class="answers-bank-image d-inline" rel="preload" >   3B   4C  5D, the rate of the reaction in terms of A would be written as ________ 
A)  (  )  
B)  (-      )  
C)  (   )  
D)   (     )  
E)  (   ) " class="answers-bank-image d-inline" rel="preload" > ) 
E)  (  3B   4C  5D, the rate of the reaction in terms of A would be written as ________ 
A)  (  )  
B)  (-      )  
C)  (   )  
D)   (     )  
E)  (   ) " class="answers-bank-image d-inline" rel="preload" > ) F) D) and E)
G) A) and D)

Question 20

The rate law of a particular reaction was determined to be Rate  k[A][B]. What is the unit of the rate constant for the reaction?

Accepted Answer

A)  M/s
B)  1/(Ms) 
C)  1/(Ms2) 
D)  1/s
E)  MsF) D) and E)
G) A) and E)

Exam 13: Chemical Kinetics: Reactions in the Atmosphere

A scientist conducts an experiment to determine the rate of the following reaction: If the initial concentration of H₂ was 0.150 M and the concentration of H₂ was 0.050 M after 2.10 s, what is the average rate of the reaction?

Correct Answer
verified

Indicate which of the following compounds is a component of photochemical smog.

Correct Answer
verified

Correct Answer
verified

A scientist conducts an experiment to determine the rate of the following reaction: If the initial concentration of NO was 0.00 M and the concentration of NO was 0.050 M after 0.100 s, what is the average rate of the reaction?

Correct Answer
verified

Given the following data for the reaction A B, determine the frequency factor, A, of the reaction. k (M/s) T (K) 2) 04  10^⁴ 250 6) 78  10^³ 400

Correct Answer
verified

The rate law of a particular reaction was determined to be Rate  k[A][B]. What is the unit of the rate constant for the reaction?

Correct Answer
verified

The mechanism for the first-order reaction in the presence of I^(aq) is proposed to be: Step 1: (slow) Step 2: (fast) Identify the catalyst in the reaction.

Correct Answer
verified

The device in automobiles that has decreased NO and partially oxidized hydrocarbons from exhaust gases is termed a(n) ________ .

Correct Answer
verified

The mechanism for the reaction in the presence of I^(aq) is proposed to be: Step 1: (slow) Step 2: (fast) What is the molecularity of the rate-determining step?

Correct Answer
verified

N₂O₅is used as a source of NO₂ in chemical reactions. The compound decomposes in a first order reaction. If the initial concentration of N₂O₅  0.400 M, and the concentration is 0.025 M after 120 seconds, what is the rate constant k of the reaction?

Correct Answer
verified

The reaction A(g)  B(g) C(g) has the following rate law: Rate  k[A]²[B]. If the concentration of A is tripled while the concentration of B is doubled, the rate will increase by a factor of ________.

Correct Answer
verified

Collision theory assumes that the rate of a reaction depends on ________

Correct Answer
verified

The energy profiles for four different reactions are shown below. The scales are the same for each. Which reaction requires the least energetic collisions to reach the transition state?

Correct Answer
verified

For the reaction 2A  3B 4C  5D, the rate of the reaction in terms of A would be written as ________

Correct Answer
verified

The steps in a reaction mechanism are as follows. Which species is acting as a catalyst? Step 1: Step 2: Step 3:

Correct Answer
verified

NO₂ contributes to the "brown haze" associated with photochemical smog events. At what time of day is NO₂ concentration highest?

Correct Answer
verified

The rate of popcorn popping at different temperatures was found to be described by the Arrhenius equation. How many times faster does the popcorn pop at 210°C compared with that at 180°C when the activation energy is 167 kJ/mol?

Correct Answer
verified

One reaction that occurs in an automobile catalytic converter is the conversion of nitrogen monoxide to nitrogen and oxygen. How could the rate of this reaction be expressed correctly in terms of the rate at which the concentration of a reactant or product changes? 2NO(g) N₂(g)  O₂(g)

Correct Answer
verified

The energy needed to form an activated complex is called ________

Correct Answer
verified

Given the following data for the reaction A B, determine the frequency factor, A, of the reaction.

Correct Answer
verified

Exam 13: Chemical Kinetics: Reactions in the Atmosphere

A scientist conducts an experiment to determine the rate of the following reaction: If the initial concentration of H2 was 0.150 M and the concentration of H2 was 0.050 M after 2.10 s, what is the average rate of the reaction?

Correct AnswerverifiedShow Answer

Indicate which of the following compounds is a component of photochemical smog.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A scientist conducts an experiment to determine the rate of the following reaction: If the initial concentration of NO was 0.00 M and the concentration of NO was 0.050 M after 0.100 s, what is the average rate of the reaction?

Correct AnswerverifiedShow Answer

Given the following data for the reaction A B, determine the frequency factor, A, of the reaction. k (M/s) T (K) 2) 04  104 250 6) 78  103 400

Correct AnswerverifiedShow Answer

The rate law of a particular reaction was determined to be Rate  k[A][B]. What is the unit of the rate constant for the reaction?

Correct AnswerverifiedShow Answer

The mechanism for the first-order reaction in the presence of I(aq) is proposed to be: Step 1: (slow) Step 2: (fast) Identify the catalyst in the reaction.

Correct AnswerverifiedShow Answer

The device in automobiles that has decreased NO and partially oxidized hydrocarbons from exhaust gases is termed a(n) ________ .

Correct AnswerverifiedShow Answer

The mechanism for the reaction in the presence of I(aq) is proposed to be: Step 1: (slow) Step 2: (fast) What is the molecularity of the rate-determining step?

Correct AnswerverifiedShow Answer

N2O5 is used as a source of NO2 in chemical reactions. The compound decomposes in a first order reaction. If the initial concentration of N2O5  0.400 M, and the concentration is 0.025 M after 120 seconds, what is the rate constant k of the reaction?

Correct AnswerverifiedShow Answer

The reaction A(g)  B(g) C(g) has the following rate law: Rate  k[A]2[B]. If the concentration of A is tripled while the concentration of B is doubled, the rate will increase by a factor of ________.

Correct AnswerverifiedShow Answer

Collision theory assumes that the rate of a reaction depends on ________

Correct AnswerverifiedShow Answer

The energy profiles for four different reactions are shown below. The scales are the same for each. Which reaction requires the least energetic collisions to reach the transition state?

Correct AnswerverifiedShow Answer

For the reaction 2A  3B 4C  5D, the rate of the reaction in terms of A would be written as ________

Correct AnswerverifiedShow Answer

The steps in a reaction mechanism are as follows. Which species is acting as a catalyst? Step 1: Step 2: Step 3:

Correct AnswerverifiedShow Answer

NO2 contributes to the "brown haze" associated with photochemical smog events. At what time of day is NO2 concentration highest?

Correct AnswerverifiedShow Answer

The rate of popcorn popping at different temperatures was found to be described by the Arrhenius equation. How many times faster does the popcorn pop at 210°C compared with that at 180°C when the activation energy is 167 kJ/mol?

Correct AnswerverifiedShow Answer

One reaction that occurs in an automobile catalytic converter is the conversion of nitrogen monoxide to nitrogen and oxygen. How could the rate of this reaction be expressed correctly in terms of the rate at which the concentration of a reactant or product changes? 2NO(g) N2(g)  O2(g)

Correct AnswerverifiedShow Answer

The energy needed to form an activated complex is called ________

Correct AnswerverifiedShow Answer

Given the following data for the reaction A B, determine the frequency factor, A, of the reaction.

Correct AnswerverifiedShow Answer

A scientist conducts an experiment to determine the rate of the following reaction: If the initial concentration of H₂ was 0.150 M and the concentration of H₂ was 0.050 M after 2.10 s, what is the average rate of the reaction?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Given the following data for the reaction A B, determine the frequency factor, A, of the reaction. k (M/s) T (K) 2) 04  10^⁴ 250 6) 78  10^³ 400

Correct Answer
verified

Correct Answer
verified

The mechanism for the first-order reaction in the presence of I^(aq) is proposed to be: Step 1: (slow) Step 2: (fast) Identify the catalyst in the reaction.

Correct Answer
verified

Correct Answer
verified

The mechanism for the reaction in the presence of I^(aq) is proposed to be: Step 1: (slow) Step 2: (fast) What is the molecularity of the rate-determining step?

Correct Answer
verified

N₂O₅is used as a source of NO₂ in chemical reactions. The compound decomposes in a first order reaction. If the initial concentration of N₂O₅  0.400 M, and the concentration is 0.025 M after 120 seconds, what is the rate constant k of the reaction?

Correct Answer
verified

The reaction A(g)  B(g) C(g) has the following rate law: Rate  k[A]²[B]. If the concentration of A is tripled while the concentration of B is doubled, the rate will increase by a factor of ________.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

NO₂ contributes to the "brown haze" associated with photochemical smog events. At what time of day is NO₂ concentration highest?

Correct Answer
verified

Correct Answer
verified

One reaction that occurs in an automobile catalytic converter is the conversion of nitrogen monoxide to nitrogen and oxygen. How could the rate of this reaction be expressed correctly in terms of the rate at which the concentration of a reactant or product changes? 2NO(g) N₂(g)  O₂(g)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified