1 / 57

Gas Laws Review

Gas Laws Review. (1). A sample of helium has a volume of 3 liters when the pressure is 500 torr. What volume does the gas occupy at 300 torr?. (1) ANSWER. 5 L. (2). How are pressure and temperature related?. (2) ANSWER. Directly proportional. (3).

holtj
Download Presentation

Gas Laws Review

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Gas Laws Review

  2. (1) • A sample of helium has a volume of 3 liters when the pressure is 500 torr. What volume does the gas occupy at 300 torr?

  3. (1) ANSWER • 5 L

  4. (2) • How are pressure and temperature related?

  5. (2) ANSWER • Directly proportional

  6. (3) • How would you convert a Celsius temperature to a Kelvin temperature?

  7. (3) ANSWER • Add 273

  8. (4) A child receives a balloon filled with 2.30 L of helium from a vendor at an amusement park. The temperature outside is 311 K. What will be the volume of the balloon when the child brings it home to an air-conditioned house at 295 K?

  9. (4) ANSWER • 2.18 L

  10. (5) A small 2.00 L fire extinguisher has an internal pressure of 506.6 kPa at 25.0°C. What volume of methyl bromide, the fire extinguisher’s main ingredient, is needed to fill an empty fire extinguisher at standard pressure if the temperature remains constant?

  11. (5) ANSWER 10.0 L (9.97 L if converted to atm to solve)

  12. (6) At a deep sea station 200. m below the surface of the Pacific Ocean, workers live in a highly pressurized environment. How many liters of gas at STP on the surface (which is at atmospheric pressure) must be compressed to fill the underwater environment with 2.00 x 107 liters of gas at 20.0 atm?

  13. (6) ANSWER • 4.00 x 108 L

  14. (7) • How are pressure and volume related?

  15. (7) ANSWER • Inversely proportional

  16. (8) Suppose you have a 500. mL container that contains 0.0500 mol of oxygen gas at 25.0 °C. What is the pressure inside the container?

  17. (8) ANSWER • 2.45 atm

  18. (9) How many grams of oxygen gas in a 10.0 L container exert a pressure of 97.0 kPa at a temperature of 25.0 °C ?

  19. (9) ANSWER • 12.5 g O2

  20. (10) A helium balloon has a volume of 500. mL at STP. What will be it new volume if the temperature is increased to 325 K and its pressure is increased to 125 kPa?

  21. (10) ANSWER • 0.483 L

  22. (11) The air in a balloon has a volume of 3.00 L and exerts a pressure of 101 kPa at 300.0K. What pressure does the air in the balloon exert if the temperature is increased to 400.0 K and the air is allowed to expand to 15.0 L?

  23. (11) ANSWER • 26.9 kPa

  24. (12) • How many moles of gas occupy 98 L at a pressure of 2.8 atm and a temperature of 292 K?

  25. (12) ANSWER • 11 moles

  26. (13) *HONORS* • If 5.0 moles of O2 and 3.0 moles of N2 are placed in a 30.0 L tank at a temperature of 25oC, what will the pressure of the resulting mixture of gases be?

  27. (13) ANSWER • 6.5 atm

  28. (14) *HONORS* • The mole fraction of helium in a tank full of helium, neon, and krypton gases is 0.256. What is the total pressure in the tank if the partial pressure of helium is 0.500 atm?

  29. (14) ANSWER • 1.95 atm

  30. (15) • How are volume and temperature related?

  31. (15) ANSWER • Directly proportional

  32. (16) • What is the device called that measures atmospheric pressure?

  33. (16) ANSWER • Barometer

  34. (17) 2 pts • Who invented the barometer?

  35. (17) ANSWER • Evangelista Torricelli

  36. (18) • How are volume and number of moles related?

  37. (18) ANSWER • Directly proportional • *KNOW HOW TO SOLVE PROBLEMS W/AVOGADRO’S LAW

  38. (19) • What is the difference between STP and standard conditions?

  39. (19) ANSWER • STP is 273 K (OoC) and 1 atm • Standard conditions is 298 K (25oC) and 1 atm

  40. (20) *HONORS* How many liters of hydrogen gas can be produced at 290. K and 99.0 kPa if 17.0 g of potassium metal are reacted with water? 2K + 2 H2O 2 KOH + H2

  41. (20) ANSWER • 5.30 L

  42. (21) *HONORS* One industrial method for producing nitric acid involves dissolving nitrogen dioxide in water. • 3 NO2 (g) + H2O (l)  2HNO3 (l) + NO (g) What mass of water will react with a 1000.0 mL container of nitrogen dioxide at 25.0 °C and 60.0 kPa?

  43. (21) ANSWER

  44. (22) • TRUE OR FALSE: Gas molecules strongly attract one another.

  45. (22) ANSWER • False

  46. (23) • TRUE OR FALSE: At higher temperatures, gases have lower kinetic energies

  47. (23) ANSWER • False

  48. (24) 2 points • Which 2 properties of gases explain why you can smell air freshener across a room.

  49. (24) ANSWER • (1) Gases diffuse through other gases • (2) Gases uniformly fill their containers

  50. (25) 2 pts • At STP a tank is filled with 22.4-L nitrous oxide. How many moles of gas are in the tank when the volume changes to 17.4 L?

More Related