WorksheetsChemical Kinetics
Total questions: 9
Worksheet time: 10mins
Name
Class
Date
1.
Reaction rate means...
a)
amount of product formed
b)
speed of reaction
c)
concentration of reacting particles
d)
combining reactants with products
2.
To measure rate of reaction, we can monitor change in which of the following?
a)
Reactants only
b)
Products only
c)
Reactants or products
3.
Which is an appropriate unit for the rate of a reaction?
a)
mol dm-3 s
b)
mol dm-3 s-1
c)
mol dm-3
d)
s
4.
rate = k[A]
The rate constant in the rate law above is 0.5 L/mol·s. If the initial concentration of A is 0.1 M, how long will it take for [A] to drop to 0.025 M?
a)
0.7 s
b)
1.4 s
c)
2.8 s
d)
There is not enough information given.
5.
Which of the following best describes why increasing temperature increase reaction rate?
a)
Activation energy is reduced.
b)
Collisions become more frequent.
c)
Collisions become more energetic.
d)
Collisions become more frequent and more energetic.
6.
What letter represents the activation energy?
a)
A
b)
B
c)
C
d)
D
7.
Under the collision theory, the particles must collide with ____ and ____ for a reaction to occur.
a)
sufficient rate and sufficient energy
b)
sufficient surface area and correct orientation
c)
sufficient catalyst and sufficient energy
d)
sufficent energy and correct orientation
8.
More collisions correspond to a:
a)
Faster reaction rate
b)
Slower reaction rate
c)
Constant reaction rate
d)
None of the above
9.
Which of the following increase the reaction rate?
a)
less surface area
b)
lower temperature
c)
an inhibitor
d)
increased concentration
100 %
