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Outline:
 1.12) Determine the pH of a 0.461 M C6H5CO2H M solution if the Ka of C6H5CO2H is 6.5 x 10-5.A) 4.52 B) 11.74 C) 5.48 D) 2.26 E) 9.48Answer: D
演講者: 洪國明
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演講日期: 2015-05-04
上架時間: 2015-05-04
上傳者: energy4104
00:44
Outline:
 1.13) A 100.0 mL sample of 0.18 M HClO4 is titrated with 0.27 M LiOH. Determine the pH of the solution after the addition of 66.67 mL of LiOH (this is the equivalence point).2.76 B) 0.97 C) 7.00 D) 13.03 E) 11.24Answer: C
演講者: 洪國明
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演講日期: 2015-05-04
上架時間: 2015-05-04
上傳者: energy4104
00:38
Outline:
 1.14) A 20.0 mL sample of 0.150 M ethylamine is titrated with 0.0981 M HCl. What is the pH after the addition of 5.0 mL of HCl? For ethylamine, pKb = 3.25.A) 2.96 B) 11.04 C) 11.46 D) 10.75Answer: C
演講者: 洪國明
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演講日期: 2015-05-04
上架時間: 2015-05-04
上傳者: energy4104
01:18
Outline:
 1.15) Calculate the pH of a solution formed by mixing 250.0 mL of 0.15 M NH4Cl with 200.0 mL of 0.12 M NH3. The Kb for NH3 is 1.8 × 10-5.A) 9.26 B) 4.74 C) 9.06 D) 9.45 E) 4.55Answer: C
演講者: 洪國明
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演講日期: 2015-05-04
上架時間: 2015-05-04
上傳者: energy4104
00:57
Outline:
 1.16) Which of the following acids will have the strongest conjugate base?A) HI B) HClO4 C) HCl D) HNO3 E) HCNAnswer: E
演講者: 洪國明
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演講日期: 2015-05-04
上架時間: 2015-05-04
上傳者: energy4104
00:29
Outline:
 1.17) A solution containing CaCl2 is mixed with a solution of Li2C2O4 to form a solution that is 3.5 × 10-4 M in calcium ion and 2.33 × 10-4 M in oxalate ion. What will happen once these solutions are mixed? Ksp (CaC2O4) = 2.3 × 10-9. A) Nothing will happen Ksp > Q for all possible precipitants.B) Nothing will happen since both calcium chloride and lithium oxalate are soluble compounds.C) A precipitate will form since Q > Ksp for calcium oxalate.D) A precipitate will form as calcium oxalate is not soluble to any extent.E) There is not enough information to determine.Answer: C
演講者: 洪國明
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演講日期: 2015-05-04
上架時間: 2015-05-04
上傳者: energy4104
00:42
Outline:
 1.18) A 100.0 mL sample of 0.20 M HF is titrated with 0.10 M KOH. Determine the pH of the solution before the addition of any KOH. The Ka of HF is 3.5 x 10-4.A) 3.46 B) 0.70 C) 4.15 D) 1.00 E) 2.08Answer: E
演講者: 洪國明
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演講日期: 2015-05-04
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上傳者: energy4104
00:59
Outline:
 1.19) A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Determine the pH of the solution after the addition of 100.0 mL of HNO3. The Kb of NH3 is 1.8 × 10-5.A) 3.44 B) 5.28 C) 8.72 D) 10.56 E) 6.58Answer: B
演講者: 洪國明
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演講日期: 2015-05-04
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01:26
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