Gas Laws and Solutions Multiple Choice Questions
Below are Some of Gas Laws and Solutions Multiple Choice Questions that you can use.
_______1.
Standard temperature is equal to
a. 273
oC. c. 0 oC.
b. 273
K. d. 0 K.
_______2.
Standard pressure is equal to
a. 1 atm. c. 1 torr.
b. 273
kPa. d. 760 atm.
_______3. At which of the following temperatures will a
gas diffuse through a room most rapidly?
a. 30
oC c. 10 oC
b. 20
oC d. 0 oC
_______4. Which of the following gases would have the
fastest rate of diffusion, assuming all of the gases are at the same
temperature?
a. Ar c. He
b. Ne d. Kr
_______5. If the volume available to the gas is
increased, the pressure exerted by one mole of gas molecules will
a. increase. c. increase then decrease.
b. decrease. d. decrease then increase.
______6.
Which of the following is not a basic assumption of the Kinetic Theory?
a. Gases
consist of molecules in constant motion in straight-line paths.
b. The
temperature of gas is proportional to the average kinetic energy of the
molecules.
c. The
collisions between gas molecules and with the walls of the container are
perfectly elastic.
d. Since
the collisions of molecules are perfectly elastic there is a strong attractive
force between molecules in the gaseous state.
_______7. All
gases
a. have
high densities.
b. have
no definite shape and volume.
c. are
lighter than air.
d. exhibit
similar chemical behavior.
_______8. Who
formulated Charles’s law?
a. Jacques
Charles c. John Charles
b. John
Dalton d. Robert Boyle
_______9. Which
mathematical expressions below shows the Charles’s law relationship?
a. V
α 1/P c. V α T
b. T
α P d. V α n
______10.
Which of the following expresses an inverse proportionality?
a. As
n increases, V increases c. As P decreases, V increases
b. As
T decreases, P decreases d. As n increases, P increases
______11.
Charles’s law explained the relationship between the
a. volume
and pressure of a fixed amount of gas at constant temperature.
b. volume
and temperature of a fixed amount of gas at constant pressure.
c. pressure
and temperature of a fixed amount of gas at constant volume.
d. pressure
and number of particles at fixed temperature and pressure.
______12. Which of the following chemical systems has
molecules that vibrate around in a fixed point in relation to the neighboring
particles?
a. soft
drink c. air
b. block
of wood d. kerosene
______13. The
gas law that describes the relationship between volume and number of moles is
a. Boyle’s
law. c. Avogadro’s law.
b. Charles’s
law. d. Dalton’s law.
______14. Which
of the following properties does not describe a gas?
a. Pressure c. Volume
b. Temperature d. Ductility
______15.
Which of the following indicates the amount of gas particles?
a. 4.00
moles of He c. 10.0 L
b. 350
K d. 1,500 torr
______16. The
partial pressure of an individual gas depends on the
a. number
of particles present in a mixture.
b. volume
occupy by gas present in a mixture.
c. total
pressure of particles in a mixture.
d. all
of the above.
______17. Gas pressure is caused by:
a. gas
molecules hitting the walls of a container.
b. gas
molecules hitting other gas molecules.
c. gas
molecules reacting with other gas molecules
d. gas
molecules heating up.
______18. If the volume of a confined gas is doubled
while the temperature remains constant, what change would be observed in the
pressure?
a. It would be half as large.
b. It
would double.
c. It
would be four times as large.
d. It
would remain the same.
______19. Avogadro stated that the volumes of gases
under the same conditions of temperature and pressure have equal
a. number
of molecules.
b. number
of grams.
c. molar
masses.
d. atoms.
______20. Which
of the following statements is true?
a. All
particles moving with the same velocity have the same kinetic energy.
b. All
particles at the same temperature have the same kinetic energy.
c. All
particles having the same kinetic energy have the same mass.
d. As
the kinetic energy of a particle is halved, its velocity is also halved.
______21.
A gas at a pressure of 608 mm Hg is held in a container with a volume of 545
mL. The volume of the container is then
increased to 1,065 mL without a change in temperature. What is the new pressure of the gas?
a. 311
mm Hg c. 511 mm Hg
b. 31.1
mm Hg d. 51.1 mm Hg
______22. To what Celsius temperature must 580 mL of
oxygen at 17 oC be raised to increase its volume to 700 mL?
a. 77
oC c. 240 oC
b. 350
oC d. 20.5 oC
______23.
What is the volume of 85 g of O2 at 25 oC and
104.5 kPa?
a. 46
dm3 c. 96 dm3
b. 64
dm3 d. 69 dm3
______24. A gas pressure is 765 torr at 23oC. At what temperature will the pressure be 560
torr?
a. 226 K c. 273 K
b. 373
K d. 426 K
______25. A
gas occupies 7.84 cm3 at 71.8 kPa and 25oC. What is the volume at STP?
a. 6.05
cm3 c. 5.09 cm3
b. 4.03
cm3 d. 1.3 cm3
______26. A
homogeneous mixture of two substances is a
a. colloid. c. solution.
b. suspension. d. compound.
______27. The
dissolving medium in the solution is the
a. solute. c. solution.
b. solvent. d. mixture.
______28.
What kind of solution forms when gasoline evaporates in air?
a. gas
in gas solution c.
liquid in gas solution
b. gas
in liquid solution d. liquid in liquid solution
______29. Which
of the particles may not be found in solutions?
a. atoms c. molecules
b. ions d. cluster of molecules
______30.
Which of the following is not a solution?
a. zinc c. brass
b. sterling
silver d. stainless steel
______31.
What is the solvent in 70% alcohol solution?
a. alcohol c. sugar
b. water d. kerosene
______32.
Which of these solutions is in solid phase?
a. tincture
of iodine c. aerosol
b. air-iodine
solution d. dental amalgam
______33.
Which of the following is not a property of solution?
a. It
has a definite composition.
b. It
has a homogeneous composition.
c. It
is consist of a single phase.
d. It
can be physically separated into its components.
______34. A
solution containing the maximum amount of dissolved solute is
a. concentrated. c. dilute.
b. unsaturated. d. saturated.
______35. When a small amount of crystal solute is
added to the supersaturated solution, the solute crystals will ______.
a. remain
unchanged. c. grow bigger.
b. slightly
dissolve. d. dissolve completely.
______36. Of
the following, which will increase the solubility of a gas in water?
a. increasing
the temperature c. increasing the volume
b. increasing
the pressure d. decreasing the pressure
______37.
Kerosene is a nonpolar solvent.
Which solute will dissolve in it?
a. hexane c. ethanol
b. sodium
carbonate d. potassium chloride
______38.
Which of the following will increase the rate at which a solid dissolves
in a liquid?
a. Lowering
the temperature of the solvent.
b. Grinding
the solid into smaller pieces.
c. Placing
the solution in opaque pieces.
d. Supersaturating
the solution.
______39.
Under which conditions of temperature and pressure is a gas most soluble
in water?
a. High
temperature and low pressure
b. High
temperature and high pressure
c. Low
temperature and low pressure
d. Low
temperature and high pressure
______40.
Most salt become soluble in water as the
a. pressure
is increased. c. temperature is decreased.
b. temperature
is increased. d. pressure is decreased.
______41. It
refers to the mass of solute dissolve in 100 g of solution.
a. Percent
by mass c. Molarity
b. Molality d. Mole fraction
______42. The
number of moles of solute divided by the number of kilograms of solvent is
a. Percent
by mass c. Molarity
b. Molality d. Mole fraction
______43. It refers to the process of preparing a less
concentrated solution from a more concentrated solution.
a. Molarity c. Dilution
b. Normality d. Molality
______44. In
dilution of solution,
a. a
solute is added to the solution.
b. solvent
is added to the solution.
c. the
amount of moles increases.
d. volume
of solution decreases.
______45. A
40% alcohol contains
a. 40
mL alcohol in 100 mL of water.
b. 40
mL alcohol in 60 mL of water.
c. 60
mL of alcohol in 100 mL of water.
d. 60
mL of alcohol in 40 mL of water.
______46.
What is the % by volume of alcohol in 50-proof whisky?
a. 100 c. 150
b. 25 d. 75
______47. What is the molar concentration of a solution
containing 15.0 g of CH3COOH and 20 mL of water?
a. 1.25
M c. 0.125 M
b. 12.5
M d. 0.0125 M
______48. How much concentrated HCl (12 M) is needed in
the preparation of 500 mL (0.5 M) solution of HCl?
a. 20.
8 mL c. 250 mL
b. 229.2
mL d. 270.8 mL
______49. What is the mole fraction of ascorbic acid, C6H8O6,
in a solution containing 80.5 g of ascorbic acid and 210 g of water?
a. 0.0377 c. 0.457
b. 0.962 d. 11.67
______50.
What is the molality when 75.0 grams of MgCl2 is dissolved in
500.0 g of solvent?
a. 1.28
m c.
2.18 m
b. 1.58
m d. 5.18 m
where is the key in this MCQ
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