1. Gases Chap. 14

2. I.Pressure/Volume Relationship

3. A. Boyle’s Experiment I.Pressure/Volume Relationship http://library.mtroyal.ca/subguides/physics.htm

4. Boyle put mercury in a ‘J tube’ in a way that tapped a sample of gas in the short side. Boyle’s Experiment http://quiz2.chem.arizona.edu/preproom/

5. Boyle put mercury in a ‘J tube’ in a way that tapped a sample of gas in the short side. Boyle recorded pressure and volume data. His table may have looked like this: Boyle’s Experiment http://quiz2.chem.arizona.edu/preproom/

6. Boyle put mercury in a ‘J tube’ in a way that tapped a sample of gas in the short side. Boyle recorded pressure and volume data. His table may have looked like this: TrialPressureVolume 11 atm40 mL 22 atm20 mL 34 atm? mL 4? atm8 mL Boyle’s Experiment http://quiz2.chem.arizona.edu/preproom/

7. Boyle put mercury in a ‘J tube’ in a way that tapped a sample of gas in the short side. Boyle recorded pressure and volume data. His table may have looked like this: Boyle’s Experiment TrialPressureVolume 11 atm40 mL 22 atm20 mL 34 atm10 mL 45 atm8 mL http://quiz2.chem.arizona.edu/preproom/

8. A. Boyle’s Experiment B. Graph I.Pressure/Volume Relationship

9. A. Boyle’s Experiment B. Graph I.Pressure/Volume Relationship

10. A. Boyle’s Experiment B. Graph C. Equation I.Pressure/Volume Relationship P 1 ∙ V 1 = P 2 ∙ V 2

11. A. Boyle’s Experiment B. Graph C. Equation D. Explanation I.Pressure/Volume Relationship Less space means the collisions will occur _____ _________ and pressure will _______.

12. A. Boyle’s Experiment B. Graph C. Equation D. Explanation E. Calculations I.Pressure/Volume Relationship

13. Self Check – Ex. 1 A 600 mL balloon has a pressure of 1.20 atm. What is the new pressure when it’s compressed to 400 mL? Assume constant temperature.

14. Self Check – Ex. 2 An oxygen container has a volume of 16 L and a pressure of 480 kPa. What volume would the gas occupy if the pressure were 120 kPa? Assume constant temperature.

15. II. Temperature/Volume Relationship

16. http://geocities.yahoo.com.br/saladefisica3/ A. Charles’ Experiment

17. II. Temperature/Volume Relationship A. Charles’ Experiment B. Graph

18. II. Temperature/Volume Relationship A. Charles’ Experiment B. Graph

19. II. Temperature/Volume Relationship A. Charles’ Experiment B. Graph extrapolate the data

20. II. Temperature/Volume Relationship A. Charles’ Experiment B. Graph C. Equation V 1 V 2 T 1 T 2 =

21. II. Temperature/Volume Relationship A. Charles’ Experiment B. Graph C. Equation D. Explanation Increasing the _________ causes the particles to move faster. More motion means they need more _______.

22. II. Temperature/Volume Relationship A. Charles’ Experiment B. Graph C. Equation D. Explanation E. Calculations

23. Self Check – Ex. 3 A sample of gas has a volume of 8 L when the temperature is 300 K. At what temperature would the gas volume be 12 L? Assume constant pressure.

24. Self Check – Ex. 4 What is the new volume of a 125 cm 3 gas sample that is heated from -23 o C to 227 o C? Assume constant pressure.

25. III.Temperature/Pressure Relationship

26. A. Gay-Lussac’s Law http://www.br-online.de/

27. III.Temperature/Pressure Relationship A. Gay-Lussac’s Law B. Graph

28. III.Temperature/Pressure Relationship A. Gay-Lussac’s Law B. Graph C. Equation P 1 P 2 T 1 T 2 =

29. III.Temperature/Pressure Relationship A. Gay-Lussac’s Law B. Graph C. Equation D. Explanation Increasing the _________ causes the particles to move faster. More collisions equates to more ________.

30. III.Temperature/Pressure Relationship A. Gay-Lussac’s Law B. Graph C. Equation D. Explanation E. Calculations

31. Self Check – Ex. 5 When the temperature of a gas goes from 250K to 300 K, the pressure of the gas goes from 800 torr to _____. Assume constant volume.

32. IV.Combined gas law

33. A. Combines three gas laws

34. IV.Combined gas law A. Combines three gas laws B. Equation P 1 ∙ V 1 P 2 ∙ V 2 T 1 T 2 =

35. IV.Combined gas law A. Combines three gas laws B. Equation C. Calculations

36. V.Ideal Gas Law

37. A. Variables that affect pressure

38. V.Ideal Gas Law A. Variables that affect pressure B. Equation PV = nRT

39. V.Ideal Gas Law A. Variables that affect pressure B. Equation C. Ideal Gas Constant R = 0.0821 atm · L mol · K

40. V.Ideal Gas Law A. Variables that affect pressure B. Equation C. Ideal Gas Constant D. Calculations

41. Self Check – Ex. 6 What is the pressure of 10 moles of helium in a 20 L container at a temperature of 27 o C?

42. Self Check – Ex. 7 What is the temperature of 2.4 mole of gas at a pressure of 720 mmHg and a volume of 2.4 L?

43. VI.Gas Stoichiometry

44. A. When any gas is at STP its molar volume is L/mol.

45. VI.Gas Stoichiometry A. When any gas is at STP its molar volume is 22.4 L/mol.

46. Self Check – Ex. 8 How many liters of SO 2 will be formed when 16 L of SO 3 decomposes. Assume all gases are at STP. 2SO 3 2SO 2 + O 2

47. VI.Gas Stoichiometry A. When any gas is at STP its molar volume is 22.4 L/mol.

48. VI.Gas Stoichiometry Mass known mol unknown A.When any gas is at STP its molar volume is 22.4 L/mol. B.To find volume of gas when it’s not at STP.

49. VI.Gas Stoichiometry Stoich. Mass known mol unknown A.When any gas is at STP its molar volume is 22.4 L/mol. B.To find volume of gas when it’s not at STP.

50. VI.Gas Stoichiometry Stoich. Mass known mol unknown T unknown P unknown vol. unknown A.When any gas is at STP its molar volume is 22.4 L/mol. B.To find volume of gas when it’s not at STP.

51. VI.Gas Stoichiometry A.When any gas is at STP its molar volume is 22.4 L/mol. B.To find volume of gas when it’s not at STP. Stoich. Mass known mol unknown T unknown P unknown vol. unknown PV = nRT

52. Self Check – Ex. 9 What volume of O 2 at 350 K and 820 torr should be produced when 245 g of KClO 3 breaks down? 2KClO 3 2KCl + 3O 2

53. VI.Gas Stoichiometry A.When any gas is at STP its molar volume is 22.4 L/mol. B.To find volume of gas when it’s not at STP. C.To find mass of substance from volume of gas (not at STP).

54. VI.Gas Stoichiometry A.When any gas is at STP its molar volume is 22.4 L/mol. B.To find volume of gas when it’s not at STP. C.To find mass of substance from volume of gas (not at STP). Volume known mol known T unknown P unknown

55. VI.Gas Stoichiometry A.When any gas is at STP its molar volume is 22.4 L/mol. B.To find volume of gas when it’s not at STP. C.To find mass of substance from volume of gas (not at STP). Volume known mol known T unknown P unknown PV = nRT

56. VI.Gas Stoichiometry A.When any gas is at STP its molar volume is 22.4 L/mol. B.To find volume of gas when it’s not at STP. C.To find mass of substance from volume of gas (not at STP). Volume known mol known mass unknown T unknown P unknown PV = nRT

57. VI.Gas Stoichiometry A.When any gas is at STP its molar volume is 22.4 L/mol. B.To find volume of gas when it’s not at STP. C.To find mass of substance from volume of gas (not at STP). Stoich. Volume known mol known mass unknown T unknown P unknown PV = nRT

58. Self Check – Ex. 10 How many grams of carbon are required to react with 620 mL of O 2 at 37ºC and 10 atm? 2C + O 2 2CO

59. The End