Practice Exercises

Record your answers on a separate sheet of paper.

1. List the five factors that affect the rate of a reaction:

   1. 1.
   2. 2.
   3. 3.
   4. 4.
   5. 5.

2. The addition of a catalyst to a reaction

   1. changes the enthalpy
   2. changes the entropy
   3. changes the nature of the products
   4. changes the activation energy

3. An increase in concentration

   1. is related to the number of collisions directly
   2. is related to the number of collisions inversely
   3. has no effect on the number of collisions

4. At the beginning of a reaction, the reaction rate for the reactants is

   1. largest, then decreasing
   2. largest and remains constant
   3. smallest, then increasing
   4. smallest and remains constant

5. The reaction rate law applied to the reaction aA + bB → AB gives the expression

   1. rate = [A]^b[B]^a
   2. rate = [AB]^a[A]^b
   3. rate = [B]^a[AB]^b
   4. rate = [A]^a[B]^b