If the rate of reaction increases by a factor of 23

005 10.0points
If the rate of reaction increases by a factor
of 2.3 when the concentration of reactant in-
creases by a factor of 1.5, what is the order of
the reaction with respect to this reactant?
1. 2 correct
2. 1.5
3. 1
4. 3
5. 4
Explanation:
006 10.0points
Consider the rate constants below. Which
would correspond to the highest order reac-
tion?
Units of M
− 2
· s
− 1
would correspond to a
3
rd
order reaction.
007 10.0points
The following data were obtained in four sep-
arate experiments measuring the initial rates
of the reaction
A + 2 B + C → products
with different concentrations of reactants.
Initial Initial Initial Initial
Trial [A] [B] [C] rate
M M M M/s
× 10
− 2
× 10
− 2
× 10
− 3
× 10
− 8
1 1 . 5 2 . 0 1 . 2 4 . 0
2 3 . 0 2 . 0 1 . 2 8 . 0
3 3 . 0 2 . 0 2 . 4 8 . 0
4 1 . 5 3 . 0 3 . 6 9 . 0
What are the exponents of [A], [B], and [C]
(in that order) in the rate law?
6. 1; 0; 2

cano (mc47235) – Homework 11 – sutcliffe – (51400) 3
Rate
3
Rate
2
=
k [A]
1
3
[B]
y
3
[C]
z
3
k [A]
1
2
[B]
y
2
[C]
z
2
8 . 0
8 . 0
=
parenleftbigg
3 . 0
3 . 0
parenrightbigg parenleftbigg
2 . 0
2 . 0
parenrightbigg
y
parenleftbigg
2 . 4
1 . 2
parenrightbigg
z
1 = 2
0
= 2
z
z = 0
Rate
4
Rate
1
=
k [A]
1
4
[B]
y
4
[C]
0
4
k [A]
1
1
[B]
y
1
[C]
0
1
9 . 0
4 . 0
=
parenleftbigg
1 . 5
1 . 5
parenrightbigg parenleftbigg
3 . 0
2 . 0
parenrightbigg
y
2 . 25 = 1 . 5
y
ln 2 . 25 = y ln 1 . 5
y =
ln 2 . 25
ln 1 . 5
= 2
008 10.0points
A hypothetical reaction
A + 2 B → C + D
is found to be first order in A and second order
in B. What are the units of k , the specific rate
constant, if reaction rate is expressed in units
of M/s?
1. M · s
− 1
2. M
2
· s
− 1
3. M
− 2
· s
− 1
correct
4. M
− 3
· s
5. M
− 1
· s
Explanation:
009 10.0points
Yes, this is the one you have to try plots for.
Use any graphing program or programmable
calculator if you have one. You WONT have
to do this for the exam. The program should
be able to give you the slope. It might not ex-
actly agree with the value given in the choices
here but it should be quite close.