Podcast
Questions and Answers
According to the gas laws, what happens to the pressure of a gas if its volume is decreased at constant temperature and number of moles?
According to the gas laws, what happens to the pressure of a gas if its volume is decreased at constant temperature and number of moles?
- The pressure remains constant.
- The pressure increases. (correct)
- The pressure fluctuates randomly.
- The pressure decreases.
A container of gas is heated while maintaining a constant volume. How does this affect the pressure of the gas inside the container?
A container of gas is heated while maintaining a constant volume. How does this affect the pressure of the gas inside the container?
- The pressure decreases proportionally to the square root of the temperature increase.
- The pressure increases proportionally to the temperature increase. (correct)
- The pressure decreases proportionally to the temperature increase.
- The pressure remains the same because the volume is constant.
A balloon is taken from a warm room to the outside on a cold winter day. What happens to the volume of the balloon, assuming the pressure remains constant?
A balloon is taken from a warm room to the outside on a cold winter day. What happens to the volume of the balloon, assuming the pressure remains constant?
- The volume of the balloon remains the same.
- The volume of the balloon fluctuates unpredictably.
- The volume of the balloon decreases. (correct)
- The volume of the balloon increases.
What does Dalton's Law of Partial Pressures state?
What does Dalton's Law of Partial Pressures state?
According to the ideal gas law, which factor is directly proportional to the number of moles (n) of a gas, assuming pressure and temperature are constant?
According to the ideal gas law, which factor is directly proportional to the number of moles (n) of a gas, assuming pressure and temperature are constant?
If 2.0 moles of gas are added to a container already holding 1.0 moles of gas, how will the pressure change if the volume and temperature are kept constant?
If 2.0 moles of gas are added to a container already holding 1.0 moles of gas, how will the pressure change if the volume and temperature are kept constant?
A gas is compressed to half of its original volume and its temperature is doubled. By what factor does the pressure change?
A gas is compressed to half of its original volume and its temperature is doubled. By what factor does the pressure change?
What is the standard temperature in Kelvin that is used in gas law calculations?
What is the standard temperature in Kelvin that is used in gas law calculations?
A container with a fixed volume has gas at a pressure of 2 atm at 27C. If the temperature is raised to 227C, what is the new pressure?
A container with a fixed volume has gas at a pressure of 2 atm at 27C. If the temperature is raised to 227C, what is the new pressure?
A sample of gas occupies 10.0 L at standard temperature and pressure (STP). If the amount of gas is doubled, what is the new volume, assuming temperature and pressure remain constant?
A sample of gas occupies 10.0 L at standard temperature and pressure (STP). If the amount of gas is doubled, what is the new volume, assuming temperature and pressure remain constant?
What units are used to express the Ideal Gas Law Constant (R)?
What units are used to express the Ideal Gas Law Constant (R)?
If a gas is removed from a container with a fixed volume, what happens to the gas pressure inside the container?
If a gas is removed from a container with a fixed volume, what happens to the gas pressure inside the container?
Given $P_1 = 830.26$ kPa, $V_1 = 9.357$ L, and $P_2 = 7.6978$ atm. What is $V_2$ in liters, according to Boyle's Law?
Given $P_1 = 830.26$ kPa, $V_1 = 9.357$ L, and $P_2 = 7.6978$ atm. What is $V_2$ in liters, according to Boyle's Law?
A sample of C4H10 occupies 79.466 L, experiencing a change in pressure from 118.22 kPa to 4.7353 atm. What is the new volume in liters?
A sample of C4H10 occupies 79.466 L, experiencing a change in pressure from 118.22 kPa to 4.7353 atm. What is the new volume in liters?
According to Charles's law, if a sample of radon changes in volume from 99.565 L to 90.06 L and the initial temperature is 468.61C, what is the final temperature in degrees Celsius?
According to Charles's law, if a sample of radon changes in volume from 99.565 L to 90.06 L and the initial temperature is 468.61C, what is the final temperature in degrees Celsius?
A gas occupies a volume of 10.0 L at 273 K and 1 atm. If the temperature is increased to 546 K and the pressure is increased to 2 atm, what is the new volume of the gas?
A gas occupies a volume of 10.0 L at 273 K and 1 atm. If the temperature is increased to 546 K and the pressure is increased to 2 atm, what is the new volume of the gas?
A closed container of fixed volume contains a mixture of nitrogen and oxygen gas. If the partial pressure of nitrogen is 60 kPa and the total pressure inside the container is 101.3 kPa, what is the partial pressure of the oxygen gas?
A closed container of fixed volume contains a mixture of nitrogen and oxygen gas. If the partial pressure of nitrogen is 60 kPa and the total pressure inside the container is 101.3 kPa, what is the partial pressure of the oxygen gas?
What would happen to the average kinetic energy of the molecules within a closed container if the absolute temperature is doubled?
What would happen to the average kinetic energy of the molecules within a closed container if the absolute temperature is doubled?
How does increasing the intermolecular forces between gas molecules affect the deviation from ideal gas behavior?
How does increasing the intermolecular forces between gas molecules affect the deviation from ideal gas behavior?
Flashcards
Boyle's Law
Boyle's Law
P₁V₁ = P₂V₂. The pressure and volume of a gas are inversely proportional when temperature and number of moles are constant.
Charles's Law
Charles's Law
V₁/T₁ = V₂/T₂. The volume of a gas is directly proportional to its temperature when pressure and number of moles are constant.
Amonton's Law
Amonton's Law
P₁/T₁ = P₂/T₂. The pressure of a gas is directly proportional to its temperature when volume and number of moles are constant.
Ideal Gas Law
Ideal Gas Law
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Dalton's Law
Dalton's Law
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Avogadro's Law
Avogadro's Law
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Pressure Conversions
Pressure Conversions
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Kelvin Conversion
Kelvin Conversion
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Ideal Gas Constant (R)
Ideal Gas Constant (R)
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Gas Compression
Gas Compression
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Heating a Contained Gas
Heating a Contained Gas
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Cold Balloon Volume
Cold Balloon Volume
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Dalton's Law of Partial Pressure
Dalton's Law of Partial Pressure
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Study Notes
- The test covers gas laws and properties of gas
- The test includes 5 short answer questions and 8 word problems
Formulas Provided
- Boyle's Law: P₁ x V₁ = P₂ x V₂
- Charles Law: V₁/T₁ = V₂/T₂
- Amonton's Law: P₁/T₁ = P₂/T₂
- Combined Gas Law: (P₁ x V₁) / T₁ = (P₂ x V₂) / T₂
- Ideal Gas Law: PV = nRT
- Dalton's Law: Ptotal = P₁ + P₂ + P₃ + ...
- Avogadro's Law: V₁/n₁ = V₂/n₂
- Ideal Gas Law Constant (R) = 0.0821 atmL / molK
Conversions
- 1 atm = 101.3 kPa = 760 mm Hg
- Kelvin = C + 273
- n = mols
- Temperatures must be in Kelvin for gas law calculations
Short Answer Topics
- Describe the behavior of gas particles during compression
- Explain how heating a contained gas at constant volume affects its pressure
- Describe the volume change of a balloon moved from indoors to a cold winter day
- State Dalton's Law of partial pressure in your own words
- Explain the drop in gas pressure as gas is removed from a fixed-volume container
Word Problems
- Type 1: 9.357 L sulfur hexafluoride changes pressure from 830.26 kPa to 7.6978 atm, find the resulting volume in liters
- Type 2: 79.466 L C₄H₁₀ changes pressure from 118.22 kPa to 4.7353 atm, find the resulting volume in liters
- Type 3: O₃ at 3.3803 atm changes volume from 98.085 L to 27.883 L, find the resulting pressure in kilopascals
- Type 4: A radon sample's temperature changes, causing a volume change from 99.565 L to 90.06 L; if the initial temperature was 468.61 °C, determine the final temperature in °C
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