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Chemistry - Reaction Rates Exam

Total questions: 38

Worksheet time: 36mins

Name
Class
Date
1.

A temperature increase causes the particles ...

a)

to slow down

b)

to move faster

c)

to collide higher

d)

in the right order

e)

to dance like no one's watching, but we are, so they better keep it in line and act professional

2.
In an exothermic reaction, heat is ...
a)
taken in
b)
given out
3.

Why does a higher temperature increase the rate of a reaction?

a)

it increases both the frequency and energy of particle collisions

b)

it only increases the frequency of particle collisions

c)

it only increases the energy of particle collisions

d)

it reduces the activation energy of the reaction

4.

What is the rate of reaction?

a)

How fast a reaction is

b)

How big a reaction is

c)

How loud a reaction is

d)

How much gas a reaction produces

e)

about $3.50

5.
Located on the left side of the reaction
a)
reactants
b)
products
6.
Grinding a seltzer tablet into powder increases the rate of reaction due to increased
a)
concentration
b)
surface area
c)
temperature
d)
reactants
7.

Which factors increase the rate of a reaction?

a)

increasing temperature

b)

increasing concentration

c)

increasing surface area

d)

all of these

8.

Which of the following increase the reaction rate?

a)

less surface area

b)

lower temperature

c)

increased concentration

9.

Icing sugar has a greater ______ _____ than a solid cube of

sugar.

a)

Surface Area

b)

Catalyst

c)

Temperature

10.

Why does breaking up a solid reactant increase the rate of reaction?

a)

it creates more solid

b)

it creates more energy

c)

it increases the surface area

d)

it increases the concentration

e)

Because it's too sad not to react

11.
A substance that increases speed of chemical reaction without being being changed is called:
a)
Catalyst
b)
Acid
c)
Base
d)
pressure
12.
The amount of a substance in a given volume.
a)
concentration
b)
temperature
c)
surface area
d)
catalyst
13.
Which of the following slows down the rate of a chemical reaction?
a)
Place the reactants in hot water
b)
Place the products in ice bath
c)
Place the reactants in a ice bath
d)
Keep stirring the reactants with a stirring rod
14.
This slows down or even stops a chemical reaction.
a)
de-activator
b)
catalyst
c)
enzyme
d)
inhibitor
15.
In a chemical reaction, if the reactants are heated, the reaction usually happens
a)
Faster
b)
Slower
c)
At the same rate
d)
In a smaller volume
16.
A reaction has the rate law: Rate = k [A][B].
What is the order of reaction with respect to A?
a)
1st
b)
2nd
c)
3rd
d)
4th
17.
A reaction has the rate law: Rate = k [A][B].
What is the overall order of reaction?
a)
1st
b)
2nd
c)
3rd
d)
4th
18.
A possible rate law for a third overall order of a reaction is __________________
a)
Rate = k [A]2[B]2
b)
Rate = k [A][B]3
c)
Rate = k [A]3 [B]
d)
Rate = k [A]2[B]
19.
The rate law for the reaction 2NO(g) + O2(g) → 2NO2(g) is first order in O2 and third order overall. What is the rate law for the reaction?
a)
Rate = k [NO]2[O2]2
b)
Rate = k [NO]1[O2]2
c)
Rate = k [NO]2[O2]1
d)
Rate = k [2NO]2[O2]1
20.

Which two trials would you use to find the rate exponent for A?

a)

trials 1 and 2

b)

trials 1 and 3

c)

trials 2 and 3

d)

Simpson and Avery

21.
What is the rate exponent for A?
a)
0
b)
1
c)
2
22.
Find the order for F2 and CIO2 using data shown below.
a)
(F2 - 2nd order) (CIO2 - 1st order)
b)
(F2 - 1st order) (CIO2 - 1st order)
c)
(F2 - 1st order) (CIO2 - 2nd order)
d)
(F2 - 2nd order) (CIO2 - 2nd order)
23.
The following data were measured for the reaction BF3(g) + NH3(g) —> F3BNH3(g)
What is the rate law for the reaction? 
a)
R=K[NH3]
b)
R=K[BF3]2[NH3]
c)
R=K[BF3][NH3]
d)
R=K[BF3][NH3]2
24.
The only factor that can change the value of k is:
a)
concentration
b)
a catalyst
c)
surface area
d)
temperature
25.

The rate of a reaction is dependent on the concentration of the reactants

a)

True

b)

False

26.
Calcium carbonate reacts with hydrochloric acid to form carbon dioxide. Which changes would slow this reaction down?
 1  decreasing the concentration of hydrochloric acid
 2  decreasing the particle size of calcium carbonate
3  decreasing the temperature 
a)
1 and 2 only 
b)
1 and 3 only 
c)
2 and 3 only 
d)
1, 2 and 3 
27.
State the order for the reaction.
a)
zero
b)
1st
c)
2nd
d)
3rd
28.
Determine the order of reaction with respect to concentration of A
a)
zero
b)
1st
c)
2nd
d)
3rd
29.

Pick the TWO (2) options that will INCREASE the rate of a reaction.

a)

Reducing Heat

b)

Adding Catalyst

c)

Adding Heat

d)

Removing Catalyst

e)

Encouraging words, moral support, and a positive attitude

30.
Which of the following is/are the fundamental idea(s) of collision theory?
a)
Molecules react by colliding together
b)
The effective collisions must occur with certain minimum amounts of energy 
c)
In a large sample, the greater the number of effective collisions, and the faster the rate of reaction
d)
All of the above
31.

Which of the following graphs would confirm that the decomposition of hydrogen peroxide was first order with respect to the concentration of hydrogen peroxide?

a)

A

b)

B

c)

C

d)

D

32.

Given the data for: F2(g) + 2ClO2(g) -> 2FClO2(g)

What is the initial rate law?

a)

r=k[F2][ClO2]

b)

r=k[F2]2[ClO2]

c)

r=k[F2][ClO2]2

d)

r=k[F2]2[ClO2]2

33.

Given r = k[BrO3-] [Br-] [H+]2; what is the overall order of reaction?

a)

0

b)

1

c)

2

d)

3

e)

4

34.

Using this data, what is the order of reaction with regards to chlorine?

a)

0

b)

1

c)

2

d)

3

35.

What is the order of reactant with respect to H2?

a)

0

b)

1

c)

2

d)

3

e)

Camel

36.

What is the order of reactant with respect to P4?

a)

0

b)

1

c)

2

d)

3

e)

Camel

37.

What is the order rate law constant (k) for this experiment?

a)

1

b)

34.4

c)

3.88

d)

.0291

e)

.0427

38.

What is the rate law for a reaction with only zero order reactants?

a)

r=k[A]

b)

r=k

c)

r=k[A]2

d)

r=k[A][B]

e)

60 mph

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