Basic Chemistry 4e Chapter 11 Gases Karen Timberlake

Basic Chemistry, 4/e Chapter 11: Gases Karen Timberlake © 2014 Pearson Education, Inc.

Chapter 11 – Gases 1. According to the kinetic molecular theory, if you increase the temperature of a gas without changing the volume of the gas, the particles will A. B. C. D. strike the container walls more often. strike the walls with less force. lose kinetic energy. increase in size. © 2014 Pearson Education, Inc.

Chapter 11 – Gases 1. According to the kinetic molecular theory, if you increase the temperature of a gas without changing the volume of the gas, the particles will A. B. C. D. strike the container walls more often. strike the walls with less force. lose kinetic energy. increase in size. © 2014 Pearson Education, Inc.

Chapter 11 – Gases 2. The conditions expressed in the abbreviation STP do not include A. B. C. D. 273 K. 0 °C. 760 mm Hg. 1 Torr. © 2014 Pearson Education, Inc.

Chapter 11 – Gases 2. The conditions expressed in the abbreviation STP do not include A. B. C. D. 273 K. 0 °C. 760 mm Hg. 1 Torr. © 2014 Pearson Education, Inc.

Chapter 11 – Gases 3. All of the following equal 1 atm except A. B. C. D. 101. 325 k. Pa. 760 mm Hg. 760 torr. 760 Pa. © 2014 Pearson Education, Inc.

Chapter 11 – Gases 3. All of the following equal 1 atm except A. B. C. D. 101. 325 k. Pa. 760 mm Hg. 760 torr. 760 Pa. © 2014 Pearson Education, Inc.

Chapter 11 – Gases 4. How many torr are in 1. 15 atm? A. B. C. D. 850 torr 874 torr 892 torr 908 torr © 2014 Pearson Education, Inc.

Chapter 11 – Gases 4. How many torr are in 1. 15 atm? A. B. C. D. 850 torr 874 torr 892 torr 908 torr © 2014 Pearson Education, Inc.

Chapter 11 – Gases 5. According to Boyle’s Law, which of the following is not a true statement? A. B. C. D. As pressure increases, volume decreases. As pressure decreases, volume increases. At constant temperature, the volume of a fixed mass of a given gas is inversely proportional to the pressure it exerts. At constant pressure, the volume of a fixed mass of a given gas is inversely proportional to the pressure it exerts. © 2014 Pearson Education, Inc.

Chapter 11 – Gases 5. According to Boyle’s Law, which of the following is not a true statement? A. B. C. D. As pressure increases, volume decreases. As pressure decreases, volume increases. At constant temperature, the volume of a fixed mass of a given gas is inversely proportional to the pressure it exerts. At constant pressure, the volume of a fixed mass of a given gas is inversely proportional to the pressure it exerts. © 2014 Pearson Education, Inc.

Chapter 11 – Gases 6. “At constant volume, the pressure of a fixed mass of a given gas is directly proportional to the Kelvin temperature” describes whose gas law? A. B. C. D. Boyle’s law Charles’s law Dalton’s law Gay-Lussac’s law © 2014 Pearson Education, Inc.

Chapter 11 – Gases 6. “At constant volume, the pressure of a fixed mass of a given gas is directly proportional to the Kelvin temperature” describes whose gas law? A. B. C. D. Boyle’s law Charles’s law Dalton’s law Gay-Lussac’s law © 2014 Pearson Education, Inc.

Chapter 11 – Gases 7. If a gas occupies 2 L at 3 atm, how many liters will it occupy at 6 atm if the temperature isn’t changed? A. B. C. D. 1 L 2 L 4 L 6 L © 2014 Pearson Education, Inc.

Chapter 11 – Gases 7. If a gas occupies 2 L at 3 atm, how many liters will it occupy at 6 atm if the temperature isn’t changed? A. B. C. D. 1 L 2 L 4 L 6 L © 2014 Pearson Education, Inc.

Chapter 11 – Gases 8. The universal gas constant, R, is equal to A. B. C. D. 22. 4 L. 0. 0821 L • atm per mol • K. 760 mm Hg. 273. 0 K. © 2014 Pearson Education, Inc.

Chapter 11 – Gases 8. The universal gas constant, R, is equal to A. B. C. D. 22. 4 L. 0. 0821 L • atm per mol • K. 760 mm Hg. 273. 0 K. © 2014 Pearson Education, Inc.

Chapter 11 – Gases 9. The temperature considered to be the standard temperature for a gas is: A. B. C. D. 298 K. 0 °C. 100 °F. 273 °C. © 2014 Pearson Education, Inc.

Chapter 11 – Gases 9. The temperature considered to be the standard temperature for a gas is: A. B. C. D. 298 K. 0 °C. 100 °F. 273 °C. © 2014 Pearson Education, Inc.

Chapter 11 – Gases 10. What is the volume of 2 moles of an ideal gas at 278 K and 0. 97 atm? A. B. C. D. 52. 25 L 55. 35 L 50. 42 L 58. 19 L © 2014 Pearson Education, Inc.

Chapter 11 – Gases 10. What is the volume of 2 moles of an ideal gas at 278 K and 0. 97 atm? A. B. C. D. 52. 25 L 55. 35 L 50. 42 L 58. 19 L © 2014 Pearson Education, Inc.

Chapter 11 – Gases 11. How many moles of an ideal gas are contained in a volume of 9 L at standard temperature and pressure? A. B. C. D. 1. 15 moles 1. 29 moles 1. 34 moles 1. 41 moles © 2014 Pearson Education, Inc.

Chapter 11 – Gases 11. How many moles of an ideal gas are contained in a volume of 9 L at standard temperature and pressure? A. B. C. D. 1. 15 moles 1. 29 moles 1. 34 moles 1. 41 moles © 2014 Pearson Education, Inc.

Chapter 11 – Gases 12. A mixture of hydrogen and oxygen gases has a total pressure of 9 atm. The pressure of the hydrogen is 5 atm. What is the volume of the oxygen gas at 298 K if there are 4 moles present? A. B. C. D. 1. 15 moles 1. 29 moles 1. 34 moles 1. 41 moles © 2014 Pearson Education, Inc.

Chapter 11 – Gases 12. A mixture of hydrogen and oxygen gases has a total pressure of 9 atm. The pressure of the hydrogen is 5 atm. What is the volume of the oxygen gas at 298 K if there are 4 moles present? A. B. C. D. 1. 15 moles 1. 29 moles 1. 34 moles 1. 41 moles © 2014 Pearson Education, Inc.

Chapter 11 – Gases 13. A. B. C. D. The amount of oxygen carried by each red blood cell depends on the partial pressure of oxygen. The lower the partial pressure of oxygen is, the less oxygen each cell can carry, so at higher altitudes you need more red blood cells. Whose law does this describe? Dalton’s law Charles’s law Boyle’s law Avogadro’s law © 2014 Pearson Education, Inc.

Chapter 11 – Gases 13. A. B. C. D. The amount of oxygen carried by each red blood cell depends on the partial pressure of oxygen. The lower the partial pressure of oxygen is, the less oxygen each cell can carry, so at higher altitudes you need more red blood cells. Whose law does this describe? Dalton’s law Charles’s law Boyle’s law Avogadro’s law © 2014 Pearson Education, Inc.

Chapter 11 – Gases 14. A. B. C. D. Consider a car tire that is initially at 32 psi (2. 17 atm) at a temperature of 25 °C. What is the pressure of the tire after 100 miles of driving if the temperature is now 50 °C? Assume the volume remains constant. 28. 9 psi 34. 7 psi 3. 06 atm 4. 34 atm © 2014 Pearson Education, Inc.

Chapter 11 – Gases 14. A. B. C. D. Consider a car tire that is initially at 32 psi (2. 17 atm) at a temperature of 25 °C. What is the pressure of the tire after 100 miles of driving if the temperature is now 50 °C? Assume the volume remains constant. 28. 9 psi 34. 7 psi 3. 06 atm 4. 34 atm © 2014 Pearson Education, Inc.

Chapter 11 – Gases 15. Which gas has the highest partial pressure in the atmosphere? A. B. C. D. CO 2 H 2 O O 2 N 2 © 2014 Pearson Education, Inc.

Chapter 11 – Gases 15. Which gas has the highest partial pressure in the atmosphere? A. B. C. D. CO 2 H 2 O O 2 N 2 © 2014 Pearson Education, Inc.