Chap 5 answers

Chap 5 answers - -11 37. C 38. 0.909 39. 11.21 40. D 41. C...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Answers 1. C 2. 8.17 x 10 -5 3. D 4. C 5. C 6. E 7. A 8. 3.3 x 10 -3 9. 1.5 x 10 -10 10. D 11. D 12. 1.4 x 10 -1 13. D 14. B 15. 7.4 x 10 -4 16. 2.2 x 10 -5 17. 6.3 x 10 -8 18. D 19. C 20. D 21. A 22. D 23. B 24. B 25. C 26. B 27. 2.3 28. 4.1 29. "Weak" acids are generally stronger acids than water. When the weak acid dissociates, an ion "common" to both equilibria (i.e., H 3 O + ) is produced. The presence of the H 3 O + from the dissociation of the weak acid will act to shift the water equilibrium to the left (like increasing the concentration of H 3 O + in the second reaction). Therefore, the degree of dissociation of water will be less in the presence of the weak acid and the hydronium ion concentration for water dissociation will be smaller than that in pure water. 30. 2.09 x 10 -8 31. C 32. C 33. 3.74 34. 2.37 x 10 -7 35. 2.36 x 10 -6 36. 1.96 x 10
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: -11 37. C 38. 0.909 39. 11.21 40. D 41. C 42. 3.46 x 10-9 43. A 44. E 45. 0.293 46. E 47. B 48. E 49. 29 50. B 51. E 52. A 53. 10.4 54. 1.7 55. Because the values of K a1 , K a2 and K a3 are so different, most of the H 3 O + will be contributed in the first step (relatively large K a ). Very little H 3 O + will be contributed by steps 2 or 3 (relatively small K a 's). Also, the large amount of H 3 O + generated in the first step will suppress the formation of additional H 3 O + in steps 2 and 3. 56. 5.2 x 10-17 57. C 58. 1.78 x 10-4 59. D 60. 3.29 61. B 62. 6.7 x 10-13 63. D 64. E 65. 8.0 66. 0.10 67. 4.0 68. 2.1 x 10-10 69. 1.8 70. C 71. 2.7 72. C 73. E 74. B 75. C 76. A 77. A 78. D 79. D 80. A 81. C 82. C 83. D 84. A 85. 21 86. D 87. D 88. E 89. A 90. C 91. C 92. C...
View Full Document

Page1 / 3

Chap 5 answers - -11 37. C 38. 0.909 39. 11.21 40. D 41. C...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online