NEW
Font size
WorksheetsRate Law Integration
Total questions: 20
Worksheet time: 1hrs 2mins
The average rate of disappearance of ozone in the reaction 2O3(g) → 3O2(g) is found to be 8.9 x 10–3 atm over a certain interval of time.
What is the rate of appearance of O2 during this interval?
1.3 x 10–2 atm/time
8.9 x 10–3 atm/time
5.9 x 10–3 atm/time
2.7 x 10–2 atm/time
1.8 x 10–2 atm/time
The rate expression for a particular reaction is Rate = k[A][B]2.
If the initial concentration of B is increased from 0.1 M to 0.3 M, the initial rate will increase by which of the following factors?
3
27
4
6
9
For the reaction: 2HI → 2H2 + I2
If HI is first order, which of the following will yield a linear plot?
log [HI] vs time
1/[HI] vs time
[HI]2 vs time
[HI] vs time
ln[HI] vs time
For the reaction: 2HI → 2H2 + I2
If HI is first order, which of the following will yield a negative exponential plot?
log [HI] vs time
1/[HI] vs time
[HI]2 vs time
[HI] vs time
ln[HI] vs time
For the reaction: 2HI → 2H2 + I2
If HI is second order, which of the following will yield a linear plot?
log [HI] vs time
1/[HI] vs time
[HI]2 vs time
[HI] vs time
ln[HI] vs time
For the reaction: 2HI → 2H2 + I2
If HI is second order, will plotting 1/[HI] vs time give a positive or negative slope?
positive
negative
Which of the following statements is typically true for a catalyst?
The concentration of the catalyst will go down as the reaction proceeds
The catalyst provides a new pathway in the reaction mechanism
The catalyst speeds up the reaction
B and C
All of the above
The catalyzed reaction has a _____ activation energy and thus causes a _____ reaction rate.
higher, lower
higher, higher
higher, steady
lower, higher
lower, steady
Consider the following mechanism:
A2 + B2 → R + C (slow)
A2 + R → C (fast)
Which is the intermediate?
A2
A
B
R
C
Consider the following mechanism:
A2 + B2 → R + C (slow)
A2 + R → C (fast)
What is the overall simplified balanced equation?
A2 + B2 → R + C
A2 + R → C
2A2 + B2 → 2C
2A2 + B2 → C
2A2 + 2B2 → 2C
Consider the following mechanism:
A2 + B2 → R + C (slow)
A2 + R → C (fast)
What is the order with respect to each reactant?
A2: 1; B2: 1
A2: 1; B2: 0
A2: 0; B2: 1
A2: 1; B2: 2
A2: 2; B2: 1
A first-order reaction is 43% complete at the end of 18 min.
What is the value of the rate constant?
3.1 x 10-2 min-1
0.21 min-1
0.071 min-1
4.7 x 10-2 min-1
1.4 x 10-2 min-1
For which order reaction is the half-life of the reaction independent of the initial concentration of the reactant(s)?
zero order
first order
second order
all of these
none of these
The following data were measured for the reaction BF3(g) + NH3(g) —> F3BNH3(g)
What is the rate law for the reaction?
R=k[NH3]
R=k[BF3]2[NH3]
R=k[BF3][NH3]
R=k[BF3][NH3]2
The following data were measured for the reaction BF3(g) + NH3(g) —> F3BNH3(g):
Calculate the rate constant with proper units?
3.408 M2-s-
4.26 s-
3.408 M-s-
4.26 M-s-
Given the rate law: Rate = k[A][B]
What is the unit of k?
s-1
s
L mol-1 s-1
L2 mol-2 s-1
mol L-1 s-1
Given the rate law: Rate = k[B]
What is the unit of k?
s-1
s
L mol-1 s-1
L2 mol-2 s-1
mol L-1 s-1
Given the rate law: Rate = k
What is the unit of k?
s-1
s
L mol-1 s-1
L2 mol-2 s-1
mol L-1 s-1
The decomposition of carbon disulfide, CS2, to carbon monosulfide, CS, and sulfur is first order with k = 2.8 x 10-7 s-1at 1000oC.
CS2 → CS + S
What is the half-life of this reaction at 1000oC?
5.0 x 107 s
4.7 x 10-6 s
3.8 x 105 s
6.1 x 104 s
2.5 x 106 s
Given that a reaction absorbs energy and has an activation energy of 50 kJ/mol, which of the following statements is correct?
The reverse reaction has an activation energy equal to 50 kJ/mol.
The reverse reaction has an activation energy less than 50 kJ/mol.
The reverse reaction has an activation energy greater than 50 kJ/mol.
