43.What is the charge of Zn in
Zn(H 2 O) 3 (OH)+?

A. 0

B. +1

C. +2

D. +3

E. +5

44.A certain organic compound has a
vapor pressure of 132 mm Hg at 54°C.
To determine the vapor pressure of 2.00
moles of the compound at 37°C, taking
the heat of vaporization for the
compound to be 4.33 x 10^4 J/mole, you
would use

A. the Arrhenius equation

B. the Clausius-Clapeyron equation

C. the combined gas laws

D. the ideal gas law

E. Raoult’s law

45.What is the molality of a 10.% (by
weight) C 6 H 2 O (MW = 90.) solution?

A. 0.012 m

B. 0.12 m

C. 1.2 m

D. 12 m

E. Not enough information is

provided.

46.If a 10. cm^3 sample of unknown
contains 1 cm^3 of 0.1 M AlCl 3 , then the
concentration of Al3+in the unknown is
about

A. 0.001 M

B. 0.01 M

C. 0.1 M

D. 1 M

E. 10. M

47. If a reactant concentration is doubled,
    and the reaction rate increases by a
    factor of 8, the exponent for that
    reactant in the rate law should be

A.^1 ⁄ 4

B.^1 ⁄ 2

C. 2

D. 3

E. 4

48. For the reaction

2 NO(g) + O 2 (g) →2 NO 2 (g)

which two of the following possible

intermediate mechanisms would

support this reaction?

1. 2 NO(g)→N 2 O 2 (g)


2. NO(g) + O 2 (g) →NO 3 (g)


3. 2 NO 2 (g) →N 2 O 2 (g) + O 2 (g)


4. NO 3 (g) + NO(g) →2 NO 2 (g)


5. NO(g) →NO(g) + O 2 (g)

A. 1 and 2

B. 2 and 3

C. 3 and 4

D. 2 and 4

E. 1 and 4

Practice Test

Section

I

Multiple-Choice Questions

GO ON TO THE NEXT PAGE