Section 11.2
The Gas Laws
Practice Test
1.
__________ law relates pressure and volume, temperature constant.
a.
Boyle's
b.
Charles's
c.
Dalton's
d.
Gay-Lussac's
Hint
2.
6.0 L of a gas exerts a pressure of 2.5 atm. When the pressure is increased to 10.0 atm, the gas volume is ____________.
a.
1.0 L
b.
1.5 L
c.
1.7 L
d.
25 L
Hint
3.
Temperature constant, 20.0 L of gas at 844 mm Hg pressure expands to 40.0 L. What is the new pressure?
a.
422 mm Hg
b.
16 900 mm Hg
c.
1.33 atm
d.
3.75 kPa
Hint
4.
A soda straw functions as __________________ the liquid up the straw.
a.
air pressure pulls
b.
air pressure pushes
c.
reduced pressure draws
d.
sucking draws
Hint
5.
Charles's law states that at constant pressure, the volume of a gas is _____________________ temperature.
a.
directly proportional to the Kelvin
b.
directly proportional to the Celsius
c.
inversely proportional to the Kelvin
d.
inversely proportional to the Celsius
Hint
6.
A balloon is filled with 10.0 L of oxygen at 27
o
C. If the temperature of the gas in the balloon increases to 127
o
C, the pressure remains constant, and the balloon does not break, what is its new volume?
a.
13.3 L
b.
6.7 L
c.
47.0 L
d.
133 L
Hint
7.
The volume of a sample of helium gas is 4.80 L at 125
o
C and 99.8 kPa. If the volume decreases to 3.20 L and pressure remains 99.8 kPa, what is the new temperature?
a.
-8
o
C
b.
265
o
C
c.
273 K
d.
422
o
F
Hint
8.
The set of conditions 1.00 atm pressure and 0.00
o
C is defined as ________.
a.
the boiling point of water
b.
the melting point of air
c.
room conditions
d.
standard temperature and pressure
Hint
9.
What is the volume of 44.6 L of CO
2
initially at 455 K and 3.66 atm when the conditions change to STP?
a.
97.9 L
b.
22.4 L
c.
682 L
d.
0.557 L
Hint
10.
A sample of of N
2
gas occupies .500 L at 555 mm Hg and 62
o
C. If its volume and temperature change to 0.400 L at 122
o
C, respectively, what is its new pressure?
a.
818 mm Hg
b.
422 mm Hg
c.
0.763 mm Hg
d.
1320 mm Hg
Hint
11.
If all three substances are at the same temperature and pressure, 0.120 L of N
2
gas reacts with 0.360 L of H
2
gas to form _________ of NH
3
gas.
a.
0.240 L
b.
0.100 L
c.
0.480 L
d.
22.4 L
Hint
12.
____________________ states that equal volumes of gases at the same temperature and pressure contain equal numbers of particles.
a.
Avogadro's principle
b.
Boyle's law
c.
Charles's law
d.
The ideal gas law
Hint
13.
Which of these units is NOT appropriate for expressing gas pressure?
a.
atm
b.
mm of Hg
c.
N
d.
Pa
Hint
14.
The ___________ method is commonly used to convert measurements to other units.
a.
division
b.
factor label
c.
multiplication
d.
triginometric
Hint
15.
976 L of oxygen at STP is compressed into a 12.0-L tank at 273 K. What is the gas pressure in the tank?
a.
81.3 atm
b.
1.00 atm
c.
2000 mm Hg
d.
2.00 atm
Hint
16.
In the combined gas law, the _________________ is held constant.
a.
number of gas particles
b.
pressure
c.
temperature
d.
volume
Hint
17.
The pressure of a sample of helium in a 1.0-L container is 0.857 atm. What is the new pressure if the sample is placed in a 0.5-L container? (Assume the temperature is constant.)
a.
0.143 atm
b.
0.429 atm
c.
1.38 atm
d.
1.71 atm
Hint
18.
A sample of gas is held in a 10.0-L volume at 175 kPa. The temperature is kept constant while the volume is decreased until the pressure is 350 kPa. What is the new volume of the gas?
a.
1.0 L
b.
5.0 L
c.
10.0 L
d.
175 L
Hint
19.
A 0.5-L container of nitrogen gas is heated under constant pressure to the boiling point of water. What is its new volume?
a.
0.5 L
b.
0.64 L
c.
0.79 L
d.
0.86 L
Hint
