Section 17.4
Instantaneous Reaction Rates and Reaction Mechanisms
Practice Test
1.
What are the individual steps in a complex reaction known as?
a.
complex steps
b.
rate-determining steps
c.
intermediate steps
d.
elementary steps
Hint
2.
What is the instantaneous rate for a reaction that is second order in A and first order in B when
A
= 2
M
and
B
= 3
M
? The specific rate constant for the reaction is 0.1
M
-2s-1.
SC.A.1.4.4
a.
1.2
M
/s
b.
0.12
M
/s
c.
0.012
M
/s
d.
12
M
/s
Hint
3.
What is the name given to a chemical produced in one elementary step and used up in a subsequent elementary step?
a.
elementary step
b.
reaction mechanism
c.
intermediate
d.
complex step
Hint
4.
What are the units that generally express a reaction rate?
SC.A.1.4.4
a.
liters per mole per second
b.
moles per liter per second
c.
seconds per liter per mole
d.
seconds per mole per liter
Hint
5.
What is the slowest of the elementary steps in a complex reaction called?
SC.A.1.4.4
a.
fast step
b.
propagating step
c.
mechanism
d.
rate-limiting step
Hint
6.
What quantity is defined by the change in concentration of a component in a chemical reaction divided by the change in time of the reaction?
SC.A.1.4.4
a.
rate order
b.
specific rate constant
c.
catalyst
d.
instantaneous rate
Hint
