Name: ate: 1 t which temperature is the vapor pressure of ethanol equal to 80 kpa?. 48. 73. 80. 101 4 Gas Molecular Mass (g/mol) 2 4 17 20 The table shown lists four gases and their molecular mass. Which gas diffuses at the slowest rate at STP? 2 Which compound has the lowest vapor pressure at 50?..... ethanoic acid. ethanol. propanone. water 5 Which equation represents sublimation?. Hg(l) Hg(s). H 2 O(s) H 2 O(g) 3 The accompanying stoppered tubes, labeled through, each contain a different gas.. NH 3 (g) NH 3 (l). H 4 (l) H 4 (g) When the tubes are unstoppered at the same time and under the same conditions of temperature and pressure, from which tube will gas diffuse at the fastest rate?.... 6 Under which conditions of temperature and pressure would a 1-liter sample of a real gas behave most like an ideal gas?. 100 K and 0.1 atm. 100 K and 10 atm. 500 K and 0.1 atm. 500 K and 10 atm page 1
7 real gas behaves more like an ideal gas when the gas molecules are. close and have strong attractive forces between them. close and have weak attractive forces between them. far apart and have strong attractive forces between them. far apart and have weak attractive forces between them 10 sealed flask containing 1.0 mole of H 2 (g) and a sealed flask containing 2.0 moles of He(g) are at the same temperature. The two gases must have equal. masses. volumes. average kinetic energies. numbers of molecules 8 real gas differs from an ideal gas because the molecules of real gas have. some volume and no attraction for each other. some volume and some attraction for each other. no volume and no attraction for each other 11 mixture of gases has a total pressure of 2000 torr. The mixture contains 8 moles of nitrogen gas and 2 moles of oxygen gas. What pressure is exerted by the oxygen gas molecules?. 200 torr. 400 torr. 2000 torr. 4000 torr. no volume and some attraction for each other 9 real gas would behave most like an ideal gas under conditions of. low pressure and low temperature. low pressure and high temperature. high pressure and low temperature 12 gas sample consisting of 2 moles of hydrogen and 1 mole of oxygen is collected over water at 29 and 750 torr. What is the partial pressure of the hydrogen in the sample?. 240 torr. 480 torr. 720 torr. 750 torr. high pressure and high temperature page 2
13 Gas samples,, and are contained in a system at STP. The partial pressure of sample is 380 torr and the partial pressure of sample is 190 torr. What is the partial pressure of sample?. 760 torr. 570 torr. 380 torr. 190 torr 16 t 25, gas in a rigid cylinder with a movable piston has a volume of 145 ml and a pressure of 125 kpa. Then the gas is compressed to a volume of 80 ml. What is the new pressure of the gas if the temperature is held at 25?. 69 kpa. 93 kpa. 160 kpa. 230 kpa 14 He O 2 O 2 The diagrams shown represent three 1-liter containers of gas,,, and. Each container is at STP. Which statement correctly compares the number of molecules in the containers?. ontainer has the greatest number of molecules.. ontainer has the greatest number of molecules.. ontainer has the greatest number of molecules.. ll three containers have the same number of molecules. 17 rigid cylinder contains a sample of gas at STP. What is the pressure of this gas after the sample is heated to 410 K?. 1.0 atm. 0.50 atm. 0.67 atm. 1.5 atm 15 gas volume that contains an equal number of hydrogen and oxygen molecules has a pressure of 0.6 atomsphere. The partial pressure due to the oxygen molecules is. 0.1 atm. 0.2 atm. 0.3 atm. 0.6 atm page 3
18 ase your answer(s) to the following question(s) on the information and diagrams below. ylinder contains 22.0 grams of O 2 (g) and cylinder contains N 2 (g). The volumes, pressures, and temperatures of the two gases are indicated under each cylinder. 20 sample of helium gas is in a sealed, rigid container. What occurs as the temperature of the sample is increased?. The mass of the sample decreases.. The number of moles of gas increases.. The volume of each atom decreases.. The frequency of collisions between atoms increases. The temperature of the O 2 (g) is increased to 450. K and the volume of cylinder remains constant. Show a correct numerical setup for calculating the new pressure of the O 2 (g) in cylinder. 21 When a sample of a gas is heated in a sealed, rigid container from 200. K to 400. K, the pressure exerted by the gas is. decreased by a factor of 2. increased by a factor of 2. decreased by a factor of 200.. increased by a factor of 200. 19 Which changes in pressure and temperature occur as a given mass of gas at 380 torr and 546 K is changed to STP?. The pressure is doubled and the temperature is halved.. The pressure is halved and the temperature is doubled.. oth the pressure and the temperature are doubled.. oth the pressure and the temperature are halved. 22 Which gas sample at STP has the same total number of molecules as 2.0 liters of O 2 (g) at STP?. 5.0 L of O 2 (g). 2.0 L of l 2 (g). 3.0 L of H 2 S(g). 6.0 L of He(g) page 4
23 Which graph represents the relationship between volume and Kelvin temperature for an ideal gas at constant pressure?. 24 ccording to the kinetic theory of gases, which assumption is correct?. Gas particles strongly attract each other.. Gas particles travel in curved paths.. The volume of gas particles prevents random motion.. Energy may be transferred between colliding particles... 25 Which diagram best represents a gas in a closed container?..... 26 Which temperature is the same as 13 elsius?. 260 K. 286 K. 747 K. 773 K page 5
27 The temperature 30 K expressed in degrees elsius is. 243. 243. 303. 303 31 gas sample is at 10.0. If pressure remains constant, the volume will increase when the temperature is changed to. 263 K. 273 K. 283 K. 293 K 28 What is the volume of 1.50 moles of an ideal gas at STP?. 11.2 L. 22.4 L. 33.6 L. 44.8 L 32 gas occupies a volume of 30 milliliters at 273 K. If the temperature is increased to 364 K while the pressure remains constant, what will be the volume of the gas?. 60 ml. 40 ml. 30 ml. 20 ml 29 sample of gas was stored in a container at a temperature of 50 and a pressure of 0.50 atmosphere. ompared to a sample of gas at STP, gas had a. higher temperature and a lower pressure. higher temperature and a higher pressure. lower temperature and a lower pressure 33 The volume of 50.0 milliliters of an ideal gas at STP increases to 100 milliliters. If the pressure remains constant, the new temperature must be. 0 K. 100 K. 273 K. 546 K. lower temperature and a higher pressure 30 The pressure on 200 milliliters of a gas at constant temperature is changed from 380 torr to 760 torr. The new volume of the gas is. 100 ml. 200 ml. 400 ml. 800 ml 34 sample of oxygen gas in a closed system has a volume of 200 milliliters at 600 K. If the pressure is held constant and the temperature is lowered to 300 K, the new volume of the gas will be. 100 ml. 200 ml. 300 ml. 400 ml page 6
35 Which temperature change would cause the volume of a sample of an ideal gas to double when the pressure of the sample remains the same?. from 200 to 400. from 400 to 200. from 200 K to 400 K 38 300-milliliter container that is filled with 100 milliliters of oxygen and 200 milliliters of hydrogen has a total pressure of 750 millimeters of mercury. What is the partial pressure of the oxygen?. 100 mm Hg. 200 mm Hg. 250 mm Hg. 500 mm Hg. from 400 K to 200 K 36 What is the total pressure exerted by a mixture containing two gases if the partial pressure of one gas is 70 torr and the partial pressure of the other gas is 30 torr?. 30 torr. 40 torr 39 sealed flask contains a mixture of 1.0 mole of N 2 (g) and 2.0 moles of O 2 (g) at 25. If the total pressure of this gas mixture is 6.0 atmospheres, what is the partial pressure of the N 2 (g)?. 6.0 atm. 2.0 atm. 3.0 atm. 9.0 atm. 70 torr. 100 torr 40 The diagram shows two flasks connected by a stopcock. Flask contains helium gas. Flask contains a vacuum. What final volume will the gas occupy after the stopcock is opened? 37 1-liter flask contains two gases at a total pressure of 3.0 atmospheres. If the partial pressure of one of the gases is 0.5 atmosphere, then the partial pressure of the other gas must be. 1.0 atm. 2.5 atm. 1.5 atm. 0.50 atm. 100 ml. 300 ml. 400 ml. 500 ml page 7
41 The partial pressures of gases,, and in a mixture are 0.75 atmosphere, 0.25 atmosphere, and 1.25 atmospheres, respectively. What is the total pressure of the gas mixture in millimeters of Hg?. 1710 mm of Hg. 1140 mm of Hg. 760.0 mm of Hg. 570.0 mm of Hg 44 mixture of oxygen, nitrogen, and hydrogen gases exerts a total pressure of 740 mm Hg at 0. The partial pressure of the oxygen is 200 mm Hg and the partial pressure of the nitrogen is 400 mm Hg. What is the partial pressure of the hydrogen gas in this mixture?. 140 mm Hg. 200 mm Hg. 400 mm Hg. 740 mm Hg 42 cylinder is filled with 2.00 moles of nitrogen, 3.00 moles of argon, and 5.00 moles of helium. If the gas mixture is at STP, what is the partial pressure of the argon?. 152 torr. 228 torr. 380 torr. 760 torr 45 When 7.00 moles of gas and 3.00 moles of gas are combined, the total pressure exerted by the gas mixture is 760 mm Hg. What is the partial pressure exerted by gas in this mixture?. 76.0 mm Hg. 228 mm Hg 43 sealed container has 1 mole of helium and 2 moles of nitrogen at 30. When the total pressure of the mixture is 600 torr, what is the partial pressure of the nitrogen?. 532 mm Hg. 760 mm Hg. 100 torr. 200 torr. 400 torr. 600 torr page 8
Problem-ttic format version 4.4.311 c 2011 2017 Educide Software Licensed for use by Mark Gironda Terms of Use at www.problem-attic.com 11/5/2017 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 1 300 = x 450 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40.
Teacher s Key Page 2 41. 42. 43. 44. 45.