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kjemi2 - Answer sheet 1 ABCDE 42 A B C D E 83 A B C D E 124...

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Answer sheet: 1. A B C D E 42. A B C D E 83. A B C D E 124. A B C D E 2. A B C D E 43. A B C D E 84. A B C D E 125. A B C D E 3. A B C D E 44. A B C D E 85. A B C D E 126. A B C D E 4. A B C D E 45. A B C D E 86. A B C D E 127. A B C D E 5. A B C D E 46. A B C D E 87. A B C D E 128. A B C D E 6. A B C D E 47. A B C D E 88. A B C D E 129. A B C D E 7. A B C D E 48. A B C D E 89. A B C D E 130. A B C D E 8. A B C D E 49. A B C D E 90. A B C D E 131. A B C D E 9. A B C D E 50. A B C D E 91. A B C D E 132. A B C D E 10. A B C D E 51. A B C D E 92. A B C D E 133. A B C D E 11. A B C D E 52. A B C D E 93. A B C D E 134. A B C D E 12. A B C D E 53. A B C D E 94. A B C D E 135. A B C D E 13. A B C D E 54. A B C D E 95. A B C D E 136. A B C D E 14. A B C D E 55. A B C D E 96. A B C D E 137. A B C D E 15. A B C D E 56. A B C D E 97. A B C D E 138. A B C D E 16. A B C D E 57. A B C D E 98. A B C D E 139. A B C D E 17. A B C D E 58. A B C D E 99. A B C D E 140. A B C D E 18. A B C D E 59. A B C D E 100. A B C D E 141. A B C D E 19. A B C D E 60. A B C D E 101. A B C D E 142. A B C D E 20. A B C D E 61. A B C D E 102. A B C D E 143. A B C D E 21. A B C D E 62. A B C D E 103. A B C D E 144. A B C D E 22. A B C D E 63. A B C D E 104. A B C D E 145. A B C D E 23. A B C D E 64. A B C D E 105. A B C D E 146. A B C D E 24. A B C D E 65. A B C D E 106. A B C D E 147. A B C D E 25. A B C D E 66. A B C D E 107. A B C D E 148. A B C D E 26. A B C D E 67. A B C D E 108. A B C D E 149. A B C D E 27. A B C D E 68. A B C D E 109. A B C D E 150. A B C D E 28. A B C D E 69. A B C D E 110. A B C D E 151. A B C D E 29. A B C D E 70. A B C D E 111. A B C D E 152. A B C D E 30. A B C D E 71. A B C D E 112. A B C D E 153. A B C D E 31. A B C D E 72. A B C D E 113. A B C D E 154. A B C D E 32. A B C D E 73. A B C D E 114. A B C D E 155. A B C D E 33. A B C D E 74. A B C D E 115. A B C D E 156. A B C D E 34. A B C D E 75. A B C D E 116. A B C D E 157. A B C D E 35. A B C D E 76. A B C D E 117. A B C D E 158. A B C D E 36. A B C D E 77. A B C D E 118. A B C D E 159. A B C D E 37. A B C D E 78. A B C D E 119. A B C D E 160. A B C D E 38. A B C D E 79. A B C D E 120. A B C D E 161. A B C D E 39. A B C D E 80. A B C D E 121. A B C D E 162. A B C D E 40. A B C D E 81. A B C D E 122. A B C D E 163. A B C D E 41. A B C D E 82. A B C D E 123. A B C D E 164. A B C D E 165. A B C D E
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1. Which of the following statements is not true concerning the titration of a weak base? 1. HCl is an appropriate titrating solution. 2. The titration starts at a lower pH, compared to the titration of a strong base with the same concentration. 3. Methylorange or methyl red are suitable indicators 4. At partial neutralization a buffer system is formed 5. The equivalence point is in the basic range. A: 5 B: 3 C:1 D: 2 E: 4 2. 1000 ml solution of each substance listed below is diluted with 1000 ml water. In which case(s) does this dilution shift the pH of the solution? 1. 0.1 N acetic acid 2. 0.1 M acetate buffer, ph = 5,7 3. 0.1 N hydrochloric acid 4. 0.1 M sodium chloride A: 1,3 B: 1,3,4 C:2,4 D: 1,2 E: 2,3,4 3. Which of the following statements is true? A: H 3 PO 4 is a weaker acid than H 2 PO 4 - B: HPO 4 2- is a stronger base than PO 4 3- C: PO 4 3- is a weaker base than HPO 4 2- D: H 2 PO 4 - is a stronger base than HPO 4 2- E: HPO 4 2- is a weaker acid than H 2 PO 4 - 4. An 0.1 M solution of a monoprotic acid has the pH of 3.0 What is the degree of dissociation in this solution?
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