Deck 12: Chemical Kinetics

Question 1

The following problem(s) pertain to The initial rate data given below for the reaction A₂ $\rightarrow$ 2A.


-Refer to Exhibit 18-1. What is the order of the reaction?

A) 0
B) 1
C) 2
D) Not enough data to answer the question
E) None of the above

Answer 1

2

Question 2

The initial rate data given below for the reaction A₂ $\rightarrow$ 2A.

-Refer to Exhibit 18-1. What is the value of the rate constant?

A) .116
B) 11.6
C) 0.086
D) Not enough data to answer the question
E) None of the above

Answer 2

11.6

Question 3

The initial rate data given below for the reaction A₂ $\rightarrow$ 2A.

-Refer to Exhibit 18-1. What are the units for the rate constant?

A) s^-1
B) mol·L^-1·s^-1
C) L·mol^-1·s^-1
D) L²·mol^-2·s^-1
E) Not enough data to answer the question
F) None of the above

Answer 3

L·mol^-1·s^-1

Question 4

The initial rate data given below for the reaction:

- Refer to Exhibit 18-2. What is the order of the reaction with respect to AB, B, and C?

A) 1,1,1
B) 2,1,1
C) 1,2,1
D) 1,1,2
E) 1,3,1
F) Not enough data to answer the question

Question 5

The initial rate data given below for the reaction:

-Refer to Exhibit 18-2. What is the overall order of the reaction?

A) 1
B) 2
C) 3
D) 4
E) 5

Question 6

The initial rate data given below for the reaction:

- Refer to Exhibit 18-2. What is the value of the rate constant?

A) 4
B) 3
C) 3.33
D) 18
E) None of the above

Question 7

The initial rate data given below for the reaction:

-Refer to Exhibit 18-2. What are the units of the rate constant?

A) s^-1
B) mol·L^-1·s^-1
C) L·mol^-1·s^-1
D) L²·mol^-2·s^-1
E) L³·mol^-3·s^-1
F) None of the above

Question 8

The reaction of propene (C₃CHCH₂) with hydrochloric acid.
HCl + C₃CHCH₂
CH₃CHClCH₃

A proposed mechanism for this chemical reaction is


-Refer to Exhibit 18-3. What is the predicted rate law for this mechanism?

A)
B) k₃[H₂Cl₂][CH₃CHClCH3^*]
C) k₂[HCl][CH₃CHCH₂]
D) none of the above

Question 9

The reaction of propene (C₃CHCH₂) with hydrochloric acid.
HCl + C₃CHCH₂

CH₃CHClCH₃

A proposed mechanism for this chemical reaction is


-Refer to Exhibit 18-3. What would be the predicted rate law if the second step were the slow step?

A)
B) k₂[H₂Cl₂][CH₃CHClCH₃^*]
C) k₂[HCl][CH₃CHCH₂]
D) none of the above

Question 10

The reaction of propene (C₃CHCH₂) with hydrochloric acid.
HCl + C₃CHCH₂

CH₃CHClCH₃

A proposed mechanism for this chemical reaction is


-Refer to Exhibit 18-3. If the first step were the slow step, what would be the predicted order of the reaction with respect to propene?

A) 0
B) 1
C) 2
D) Experimental data required to answer this question
E) none of the above

Question 11

The reaction of propene (C₃CHCH₂) with hydrochloric acid.
HCl + C₃CHCH₂

CH₃CHClCH₃

A proposed mechanism for this chemical reaction is


-Refer to Exhibit 18-3. Which of the species in the mechanism given above are reaction intermediates?

A) H₂Cl₂
B) HCl
C) CH₃CHClCH₃^*
D) a and b
E) none of the above

Question 12

The following question(s) pertain to The scenario below.
A student performed a kinetic study of the reaction:
2NO(g) + O₂(g) $\rightarrow$ 2NO₂(g)
The student prepared the four plots seen below in lab, but forgot to label the axes. A classmate later told him that the reaction was second order in NO and first order in O₂. Not wanting to get a bad grade in the class, the student sets out to label the axes on the graphs.


- Refer to Exhibit 18-5. Which graph corresponds to plotting ln[NO] vs. time?

A) top left
B) top right
C) bottom left
D) bottom right
E) none of the above