59.According to Raoult’s law, which
statement is false?A. The vapor pressure of a solvent
over a solution is less than that of
the pure solvent.
B. Ionic solids ionize in water,
increasing the effect of all
colligative properties.
C. The vapor pressure of a pure
solvent when measured over a
solution decreases as the mole
fraction increases.
D. The solubility of a gas increases as
the temperature decreases.
E. The solubility of a gas in solution
increases as the pressure of the gas
increases.60.Calculate the volume of a 36.45%
solution of hydrochloric acid (density =
1.50 g/mL) required to prepare 9.0 liters
of a 5.0-molar solution.A. 0.5 liter
B. 1.0 liter
C. 2.0 liters
D. 2.5 liters
E. 3.0 liters- Dinitrogen pentoxide decomposes
according to the following balanced
equation:
N 2 O 5 (g) →2 NO 2 (g) +^1 ⁄ 2 O 2 (g)The rate of decomposition was found tobe 0.80 mole ⋅liter–1⋅sec–1at a given
concentration and temperature. What
would the rate be for the formation of
oxygen gas under the same conditions?A. 0.20 mole ⋅liter–1⋅sec–1
B. 0.40 mole ⋅liter–1⋅sec–1
C. 0.80 mole ⋅liter–1⋅sec–1
D. 1.60 moles ⋅liter–1⋅sec–1
E. 3.20 moles ⋅liter–1⋅sec–1
- The Kspof lead (II) chloride is
2.4 × 10 –4. What conclusion can be
made about the concentration of [Cl–]
in a solution of lead chloride if
[Pb2+] = 1.0 M?
A. [Cl–] can have any value.
B. [Cl–] cannot be greater than^1 ⁄ 2 Ksp.
C. [Cl–] cannot be less than^1 ⁄ 2 Ksp.
D. [Cl–] cannot be equal to^1 ⁄ 2 Ksp.
E. [Cl–] must also be equal to 1.0 M.Part IV: AP Chemistry Practice Test