Chap 6 answers

Chap 6 answers - 53. E 54. B 55. B 56. A 57. C 58. C 59. B...

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Answers 1. B or E 2. B 3. B 4. A 5. 2.7 x 10 -23 6. 1.8 x 10 -5 7. 2.2 x 10 -8 8. 3.3 x 10 -13 9. C 10. C 11. B 12. B 13. 3.16 x 10 -23 14. 1.2 x 10 -3 15. 7.1 x 10 -7 16. 6.7 x 10 -6 17. E 18. 1.2 x 10 -3 19. 2.0 x 10 -14 20. C 21. B 22. B 23. C 24. D 25. A 26. B 27. C 28. 1.4 x 10 -5 29. 0.016 30. 3.2 x 10 -10 31. 2.0 x 10 -3 32. C 33. D 34. B 35. 1.2 x 10 -3 36. C 37. D 38. D 39. A 40. 8.8 x 10 -12 41. 2.3 x 10 -9
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42. 1.0 x 10 -24 43. 3.9 x 10 -6 44. 10.4 45. Mg(OH) 2 should be more soluble in gastric juice. Consider the following equilibria: 46. Mg(OH) 2 ( s ) <=> Mg 2+ + 2 OH - 47. H 3 O + + OH - <=> 2 H 2 O The acid in gastric juice reacts with the strong base, OH - , to produce water. This will shift the first equilibrium to the right causing more solid Mg(OH) 2 to dissolve. 48. a. Nothing. The solution is saturated so no more solid will dissolve. b. Nothing. The solution is saturated so no more solid will dissolve. c. Nothing. The solution is saturated so no more salt will dissolve. The solubility will be unaffected. 49. B 50. A 51. D 52. C
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Unformatted text preview: 53. E 54. B 55. B 56. A 57. C 58. C 59. B 60. A 61. D 62. K sp = [Pb 2+ ] 3 [PO 4 3-] 2 63. 3.5 x 10-13 64. a. Addition of magnesium nitrate, a soluble salt, would decrease the solubility of magnesium hydroxide. The reaction will shift to the left to reestablish equilibrium. b. Addition of sodium hydroxide, a soluble salt, would decrease the solubility of magnesium hydroxide. The reaction will shift to the left to reestablish equilibrium. c. Addition of hydrochloric acid will increase the solubility of magnesium hydroxide (HCl, a strong acid, reacts with hydroxide ion, a strong base). The reaction will shift to the right to reestablish equilibrium. d. Addition of sodium nitrate will have NO EFFECT since it does not contain any common ions, and it is neither an acid or a base. 65. 3.7 x 10-10 66. B 67. 1.21 x 10-26 68. 1.01 x 10-25 69. B 70. 4.2 x 10-16 71. E 72. A 73. D 74. D 75. A 76. C 77. A 78. E 79. A 80. A...
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Chap 6 answers - 53. E 54. B 55. B 56. A 57. C 58. C 59. B...

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