22. Which of the following alkyl chlorides is least likely to undergo rearrangement during a solvoly
23. Which of the following descriptions of the nucleoside uridine does not apply to the structure of
24. Which of the following is correct in order of decreasing nucleophilicity toward methyl iodide in
25. Which of the following compounds will undergo SN2 reaction most readily?(A) (CH3)3CCH2I (B) (CH3
26. Which of the following carbonyl compounds can be reduced by H2/Raney Ni?(A) acetic acid (B) ethy
2 2.一三質子酸，H3A，酸解離平衡常數分別為Kal=1.0xl0-2，Ka2=1.0✕10-6及Ka3=1.0✕ 10-10溶液中，該酸以H2A-為主要成分，則此溶液的酸鹼值(pH)應在:(A)7
3.放射性同位素’ 64Cu ’衰變反應如右式：64Cu→64Zn + β-;半衰期是12.8小時。100克的64Cu經 25.6小時後會產生多少克的64Zn? (A) 77.2(B) 75(C)72
4.請估算右式反應的熱焓變化：CH4+C12→CH3Cl+HCl，鍵能(Cl-H)=413kJ， 鍵能(C-CL)=339 kJ，鍵能(Cl-H)=427 kj，鍵能(Cl-Cl)=243kJ。, (
5.關於PF3正確的敘述是：1.平面三角形 2.磷原子含有1對未共用電子 3.磷原子是sp2-混成(hybridization)4.極性分子.5.含有極性鍵(A) 1，2 和 4(B) 1,3和5(C
8.下列各溶質均加入1.0仟克的水中，那一水溶液會具有最高的沸點？(A) 0.010 mole HF(B) 0.010 mole NaCl (C) 0.010 mole H2SO3 (D) 0.010
10.已知Cu2+ + e-→Cu+ Eo = 0.15 V ; Cu+ + e-→Cu E° = 0.52 V請計算右式反應Cu2+ + 2e-→Cu的標準電位值Eo = ?(A) 0.67 V(B
30. Which of the following chemical reactions could be used to distinguish between a polyunsaturated
31. When an alkene is subjected to treatment with Hg(OAc)2 in alcohol followed by reaction with NaBH
32. Distillation of mixtures of ethanol and water cannot increase the ethanol content of the mixture