Chapter 12 Review The Behavior of Gases

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Chapter 12 ReviewThe Behavior of Gases

• Milbank High School

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Chapter 12 - Review

• Know the assumptions of the kinetic theory.
• Why does the pressure inside a container of gas
  increase if more gas is added to the container?
• Why does air leave a tire when the tire valve is
  opened?

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Chapter 12 - Review

• If 4 moles of gas are added to a container that
  already holds 1 mole of gas, how will the
  pressure change within the container?
• Increasing the volume of a given amount of gas at
  constant temp. causes the pressure to decrease
  because _______.

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Chapter 12 - Review

• If the volume of a container holding a gas is
  reduced, what will happen to the pressure within
  the container?
• What happens to the temperature of a gas when it
  is compressed?

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Chapter 12 - Review

• What happens to the pressure of a gas inside a
  container, if the temperature of the gas is
  lowered?
• If a balloon is squeezed, what happens to the air
  pressure within the balloon?

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Chapter 12 - Review

• The volume of a gas is doubled while the
  temperature is held constant. How does the gas
  pressure change?
• The volume of a gas is reduced from 4.0 L to 0.5
  L while the temperature is held constant. How
  does the gas pressure change?

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Chapter 12 - Review

• A gas occupies a volume of 0.7 L at 10.1 kPa.
  What volume will the gas occupy at 101 kPa?
• A sample of gas occupies 40 mL at 123 oC. What
  volume does the sample occupy at 27 oC?
• What type of changes could cause an increase in
  the pressure of a gaseous system?

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Chapter 12 - Review

• Why does an aerosol can become cooler when gas is
  released?
• As the temperature of a fixed volume of gas
  increases, the pressure will _____.
• As the temperature of a balloon decreases, the
  average kinetic energy _____.

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Chapter 12 - Review

• Boyles law states that _____.
• When the temperature and number of particles are
  kept constant for a sample of gas, what is also
  constant for the sample?
• Charles law states that _____.

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Chapter 12 - Review

• When the pressure and number of particles are
  kept constant for a gas, what else is kept
  constant?
• If a capped syringe is plunged into cold water,
  in which direction will the syringe piston slide?

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Chapter 12 - Review

• Generally, for a gas at a constant volume, the
  pressure is _____ proportional to its temperature
  in Kelvin.
• If a capped syringe is heated, in which direction
  will the syringe piston move?
• The combined gas law relates to what variables?

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Chapter 12 - Review

• If a balloon containing 1000 L of gas at 50 oC
  and 101 kPa rises to an altitude where the
  pressure is 50.5 kPa and the temperature is 10
  oC, the volume of the balloon under these new
  conditions would be _____.

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Chapter 12 - Review

• At very high pressures, how does the volume of a
  real gas compare with the volume that would be
  predicted for an ideal gas under the same
  conditions?
• At low temp. and pressure, how does the volume of
  a real gas compare with an ideal gas?

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Chapter 12 - Review

• An ideal gas CANNOT be converted to a ____.
• When the volume and number of particles are held
  constant for a sample of gas, what else is kept
  constant?
• Which is constant for 1 mole? PT/V or PV/T

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Chapter 12 - Review

• At a certain temperature and pressure, 0.20 mol
  of CO2 has a volume of 3.1 L. A 3.1 L sample of
  hydrogen at the same temperature and pressure
  contains ______ molecules.
• Under what conditions is the behavior of a real
  gas like that of an ideal gas?

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Chapter 12 - Review

• What happens to the partial pressure of oxygen in
  the air if the air temperature is increased?
• If the volume of a container of air is reduced by
  one-half, what happens to the partial pressure of
  oxygen within the container?

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Chapter 12 - Review

• A breathing mixture used by deep-sea divers
  contains helium, oxygen, and carbon dioxide.
  What is the partial pressure of oxygen at 101
  kPa, if PHe 84 kPa and PCO2 0.1 kPa?

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Chapter 12 - Review

• When a container is filled with 3 moles of H2, 2
  moles of O2, and 1 mole of N2, the pressure in
  the container is 8787 kPa. What is the partial
  pressure of O2?

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Chapter 12 - Review

• If the atmospheric pressure on Mt. Everest is
  one-third the atmospheric pressure at sea level,
  the partial pressure of oxygen on Mt. Everest is
  _____.
• The tendency of molecules to move toward areas of
  lower concentration is called _____.

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Chapter 12 - Review

• A box with a volume of 22.4 L contains 1.0 mol of
  nitrogen and 2.0 moles of hydrogen at 0 oC. What
  is the partial pressure of the nitrogen?
• Which gas would effuse most rapidly chlorine or
  hydrogen?