Cliffs AP Chemistry, 3rd Edition

26.

d

dt

B

is equal to

• 6@

A. dt

• d6@A

B. dt

• d6@C

C. dt

• d 21 6@D

D. dt

d 51 6@E

E. none of these

27. To decrease the rate constant k, one
    could

A. increase [E]

B. decrease [B]

C. decrease the temperature

D. increase the volume

E. increase the pressure

28.If one were to reduce the volume of a

container by^1 ⁄3,the rate of the reaction

would increase by a factor of

A. 3

B. 9

C. 16

D. 27

E. Reducing the volume of the

container has no effect on the rate.

29. Sulfur trioxide gas dissociates into
    sulfur dioxide gas and oxygen gas at
    1250 °C. In an experiment, 3.60 moles
    of sulfur trioxide were placed into an
    evacuated 3.0-liter flask. The
    concentration of sulfur dioxide gas
    measured at equilibrium was found to
    be 0.20 M. What is the equilibrium
    constant, Kc, for the reaction?

A. 1.6 × 10 –4

B. 1.0 × 10 –3

C. 2.0 × 10 –3

D. 4.0 × 10 –3

E. 8.0 × 10 –3

30. A solution has a pH of 11.0. What is the
    hydrogen ion concentration?

A. 1.0 × 10 –11M

B. 1.0 × 10 –3M

C. 0.0 M

D. 1.0 × 103 M

E. 1.0 × 1011 M

Part IV: AP Chemistry Practice Test