Gases Conceptual

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conceptual gas problems

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Gases Conceptual

  1. 1. Chapter 10 Gases Chemistry, The Central Science , 10th edition Theodore L. Brown; H. Eugene LeMay, Jr.; and Bruce E. Bursten Donna Narsavage Heald Siena College Loudonville, NY  2006, Prentice-Hall
  2. 2. What is the pressure of the gas in the bulb? <ul><li>P gas = P h </li></ul><ul><li>P gas = P atm </li></ul><ul><li>P gas = P h + P atm </li></ul><ul><li>P gas = P h - P atm </li></ul><ul><li>P gas = P atm - P h </li></ul>
  3. 3. What is the pressure of the gas in the bulb? <ul><li>P gas = P h </li></ul><ul><li>P gas = P atm </li></ul><ul><li>P gas = P h + P atm </li></ul><ul><li>P gas = P h - P atm </li></ul><ul><li>P gas = P atm - P h </li></ul>
  4. 4. If 250 mL of NO is placed in a flask with O 2 , what volume of O 2 is needed for complete reaction? <ul><li>100 mL </li></ul><ul><li>125 mL </li></ul><ul><li>200 mL </li></ul><ul><li>250 mL </li></ul><ul><li>Cannot be determined from the given information. </li></ul>2 NO ( g ) + O 2 ( g ) 2 NO 2 ( g )
  5. 5. If 250 mL of NO is placed in a flask with O 2 , what volume of O 2 is needed for complete reaction? <ul><li>100 mL </li></ul><ul><li>125 mL </li></ul><ul><li>200 mL </li></ul><ul><li>250 mL </li></ul><ul><li>Cannot be determined from the given information. </li></ul>2 NO ( g ) + O 2 ( g ) 2 NO 2 ( g )
  6. 6. If an equal mass of each gas is put into a separate balloon, which will have the greatest volume? Assume that they are all the same temperature and pressure. <ul><li>He </li></ul><ul><li>H 2 </li></ul><ul><li>N 2 </li></ul><ul><li>Ne </li></ul><ul><li>O 2 </li></ul>
  7. 7. If an equal mass of each gas is put into a separate balloon, which will have the greatest volume? Assume that they are all the same temperature and pressure. <ul><li>He </li></ul><ul><li>H 2 </li></ul><ul><li>N 2 </li></ul><ul><li>Ne </li></ul><ul><li>O 2 </li></ul>
  8. 8. If equal masses of CH 4 , C 2 H 6 , and C 3 H 8 are placed in a flask, which of the following is true? <ul><li>P CH 4 = P C 2 H 6 = P C 3 H 8 </li></ul><ul><li>P CH 4 ~ P C 2 H 6 ~ P C 3 H 8 </li></ul><ul><li>P CH 4 > P C 2 H 6 > P C 3 H 8 </li></ul><ul><li>P CH 4 < P C 2 H 6 < P C 3 H 8 </li></ul><ul><li>None of the above </li></ul>
  9. 9. If equal masses of CH 4 , C 2 H 6 , and C 3 H 8 are placed in a flask, which of the following is true? <ul><li>P CH 4 = P C 2 H 6 = P C 3 H 8 </li></ul><ul><li>P CH 4 ~ P C 2 H 6 ~ P C 3 H 8 </li></ul><ul><li>P CH 4 > P C 2 H 6 > P C 3 H 8 </li></ul><ul><li>P CH 4 < P C 2 H 6 < P C 3 H 8 </li></ul><ul><li>None of the above </li></ul>
  10. 10. Arrange the gases according to increasing molecular speed. <ul><li>He (25) < He (100) < Ne (25) < Ne (0) </li></ul><ul><li>He (25) < He (100) < Ne (0) < Ne (25) </li></ul><ul><li>Ne (0) < Ne (25) < He (25) < He (100) </li></ul><ul><li>Ne (25) < Ne (0) < He (100) < He (25) </li></ul><ul><li>Ne (0) < He (25) < Ne (25) < He (100) </li></ul>He (25°C) He (100°C) Ne (25°C) Ne (0°C)
  11. 11. Arrange the gases according to increasing molecular speed. <ul><li>He (25) < He (100) < Ne (25) < Ne (0) </li></ul><ul><li>He (25) < He (100) < Ne (0) < Ne (25) </li></ul><ul><li>Ne (0) < Ne (25) < He (25) < He (100) </li></ul><ul><li>Ne (25) < Ne (0) < He (100) < He (25) </li></ul><ul><li>Ne (0) < He (25) < Ne (25) < He (100) </li></ul>He (25°C) He (100°C) Ne (25°C) Ne (0°C)
  12. 12. If a mixture of gas A and gas B is moved from flask 1 to flask 2, which of the following is true: <ul><li>P A , P B , and P tot decrease </li></ul><ul><li>P A , P B , and P tot increase </li></ul><ul><li>P A and P B decrease, P tot remains the same </li></ul><ul><li>P A , P B , and P tot remain the same </li></ul><ul><li>P A and P B remain the same, P tot decreases </li></ul>flask 1 flask 2
  13. 13. If a mixture of gas A and gas B is moved from flask 1 to flask 2, which of the following is true: <ul><li>P A , P B , and P tot decrease </li></ul><ul><li>P A , P B , and P tot increase </li></ul><ul><li>P A and P B decrease, P tot remains the same </li></ul><ul><li>P A , P B , and P tot remain the same </li></ul><ul><li>P A and P B remain the same, P tot decreases </li></ul>flask 1 flask 2

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