Kinetic Theory and a Model for Gases

1
Kinetic Theory and a Model for Gases

• Particles of gases are small and have
  insignificant volume.
• Particles move rapidly and randomly.
• All collisions are perfectly elastic.

2
What is the pressure (in mmHg) if a 3.0 L
sample at 860 mmHg is reduced to a volume of 0.50
L?
3
A 2.0 L balloon at 21.0 oC is taken outside on a
cold -12.0 oC day. What would be the volume of
the balloon?
4
What is the pressure (in kpa) in an aerosol can
at 70.0 oC if its initial pressure and
temperature was 206 kpa and 30.0oC respectively?
5
A gas occupies 200.0 ml at a pressure of 198.4
kPa and a temp. of 19.0 degrees Celsius. The next
day, it was measured at a pressure of 110.3 kPa
and a temp. of 11.0 degrees Celsius. What is the
new volume?
6
How many moles of Argon gas are in a 34.0 liter
sample at 1.4 atm and -45.9oC?(R 0.0821 L x
atm/mol x K)
7

At what temperature (in K) will 356 grams of
sulfur dioxide occupy 145.0 L at 895 torr?
8
3.876 grams of potassium sulfate is
decomposed. What is the volume of the gas phase
product if the temperature is 298 K and the
pressure is 2.96 atm?
9
Calculate the volume of gas that would be
generated by reacting 100.0 grams of aluminum
carbonate with excess HCl under lab conditions of
22.0oC and 790mmHg.
10
Pig DirtWhat is the GFM of a gas at 0.90 atm
and 299 K if its density is 9.5 x 10-2 g/L
11
A gas has a volume of 28.2 dm3 at a temp. of 38.0
oC and a pressure of 72.6 kPa. Given that the
mass of this sample is 45.00 grams, what is the
GFM?
12
. The decomposition of a sample of potassium
chlorate generates 3.1 liters of oxygen gas at a
pressure of 2.9 atm and a temperature of 309 K.
How many grams of oxygen was produced?
13
A mixture of helium, oxygen and nitrogen gases
have a pressure of 760 mmHg. If the partial
pressure of helium is 31 mmHg and the partial
pressure of oxygen is 467 mmHg, what is the
partial pressure of nitrogen?
14
A sealed 5.00 L container with helium gas in it
exerts a pressure of 1.23 atm. What will this
pressure be if 0.35 moles of oxygen is added to
this container (The temperature is 285 K.)?
15
A 2.00 L volume of chlorine gas, at a pressure of
45 kPa is mixed together with a sample of CO2 gas
with a volume of 1.20 L and a pressure of 202.6
kPa. The new container has a volume of 7.00 L.
Find the partial pressure of each gas in the new
container, and find the total pressure.
16
Compare the rates of effusion of chlorine and
Helium gases.
17
Compare the rates of effusion of hydrogen gas and
radon gas