RATE OF REACTION AND RATE LAWS MULTIPLE CHOICE TEST
Note: The letter in bold is the answer
Select the best answer:
1. It is the change in the concentration of reactants or products per unit time.
a. Rate law
b. Rate constant
c. Rate of reaction
d. Instantaneous rate
2. Which of the following is the unit of reaction rate?
a. M/s
b. m/s
c. M/s
2
d. m/s
2
3.Which of the following is not a factor affecting reaction rate?
a. Temperature
b. Pressure
c. Concentration of Reactants
d. Presence of catalyst
4. It shows the how the rate of reaction depends on the concentration of reactants.
a. Rate law
b. Rate constant
c. Rate of reaction
d. Instantaneous rate
5. If the rate law of a reaction is Rate = k[A]
2
[B], what is the overall reaction orders?
a. first order overall
b. second order overall
c. third order overall
d. fourth order overall
6. In the rate law in no. 5, what is the reaction order with respect to A?
a. first order overall
b. second order overall
c. third order overall
d. fourth order overall
7. If the unit of rate constant in the second order overall reaction is M
-1
s
-1
, what is the unit
of rate constant of the first order overall?
a. M
2
s
-1
b. s
-1
c. M
-3
s
-1
d. s
-2
8. In the equation A + B → C, what is the expression of rate of disappearance of the
products?
a. Rate = ∆[A] /∆t
b. Rate = ∆[B] /∆t
c. Rate = ∆[C] /∆t
d. Rate = -∆[A] /∆t
9. Which of the following is an example of first order reaction?
a. A → Products
b. 2A → Products
c. A + A → Products
d. AB → Products
10. The rate law for a reaction is Rate = k [A][B]
2
, Which of the following statement
is false?
a. The reaction is first order in A.
b. The reaction is second order in B