Think you’ve got your head wrapped around Kinetics? Put your knowledge to
the test. Good luck — the Stickman is counting on you!
Q. Which of the following could be the rate law for a third-order reaction?
rate = k[A]
rate = k[A]2[B]
rate = k[A][B]
rate = k[A]2
None of the Above
Q. The rate law of a reaction is rate = k[A][B]. What are the units of k with t (in s)?:
s-1
M-1s-2
M-2s-1
M-1
None of the Above
Q. For rate = k[A]2. Which of the following plots will give a straight line?
1/[A] vs. 1/t
[A]2 vs. t
1/[A] vs. t
ln[A] vs. t
None of the above
Q. For the reaction A + B ⇌ C the rate = k[A]. Which of the following is incorrect?
The units of the rate constant are s-1
The rate is independent of the concentration of [B]
A plot of [A] against time is linear
The rate depends on the concentration of A
None of the above
Q. For the reaction of 2A + B ⇌ C, which of the following statements is correct?
The rate of appearance of C equals the rate of disappearance of A.
C appears at a rate equal to the sum of the rates of the disappearance of A and B.
The rate of disappearance of A is twice that of B.
The rate of the disappearance of B is twice that of A.
None of the above
Q. The reaction of A and B is second order with respect to B. A is in a huge excess. Which of the following is incorrect?
A plot of ln[A] vs. t is linear
A plot of [A] vs t is non-linear
There is not enough information
A plot of 1/[A] vs t is linear
None of the above
Q. The rate of a chemical reaction can be expressed in _______.
grams per mole
energy consumed per mole
volume of gas per unit time
moles formed per liter of solution
None of the above
Q. To increase the rate of a reaction, there must be _______.
a decrease in the frequency of collisions
an increase in the frequency of collisions
an increase in temperature
an increase in pressure
None of the above
Q. An increase in temperature usually increases the rate of a chemical reaction because _______.
the activation energy is lower
exothermic reactions are always favored
a great fraction of particles have sufficient kinetic energy
the particles are more likely to have favorable collisions
None of the Above
Q. Which of the following will decrease the number of good collisions during a chemical reaction?
Adding a catalyst
Increasing the surface area of the reaction
Decreasing the temperature
Increasing reaction concentrations
None of the above