阿摩線上測驗
登入
首頁
>
研究所、轉學考(插大)◆化學(含普通化學、有機化學)
>
109年 - 109 亞洲大學_學士後招生考試_獸醫學系:化學(含普通化學、有機化學)#101267
> 試題詳解
32. Which conformation of pentane is most stable?
(A) I
(B) II
(C) III
(D) IV
答案:
登入後查看
統計:
尚無統計資料
其他試題
28. Which of the following is a Lewis base? (A)AlF3 (B) H2O (C) SiF4 (D)
#2775399
29. Which are acid-base reactions according to Lewis theory but not according to the Brønsted-Lowry theory? (A) I, II (B) III, IV (C) I, III, IV (D) I, II, III, IV
#2775400
30. Which acid is the most acidic? (A) I (B) II (C) III (D) IV
#2775401
31. Which is the IUPAC name for the following cycloalkane? (A) 2,4-dimethyl-1-ethylcyclopentane (B) 1,3-dimethyl-5-ethylcyclopentane (C) 1-ethyl-2,4-dimethylcyclopentane (D) 1-ethyl-3,5-dimethylcyclopentane
#2775402
33. Which of these diaxial conformations has the highest energy? (A) I (B) II (C) III (D) IV
#2775404
34. Which structure is Z-2-bromo-3-methyl-2-pentene? (A) I (B) II (C) III (D) IV
#2775405
35. Arrange these carbocations in order of increasing stability (least to most). (A) I, II, III (B) I, III, II (C) II, I, III (D) III, II, I
#2775406
36. Which of the following alkenes is the major product when 2-bromo-2-methylpentane is treated with sodium ethoxide in ethanol? (A) 2-methylpent-1-ene (B) 2-methylpent-2-ene (C) ( E )-4-methylpent-2-ene (D) (Z)-4-methylpent-2-ene
#2775407
37. Which of the following alkenes is the major product when 2-bromo-2-methylpentane is treated with potassium tert-butoxide in tert-butanol? (A) 2-methylpent-1-ene (B) 2-methylpent-2-ene (C) ( E )-4-methylpent-2-ene (D) (Z)-4-methylpent-2-ene
#2775408
38. Which of the following statements applies to the E2 mechanism? (A) It occurs with inversion of stereochemistry. (B) It occurs with racemization of stereochemistry. (C) It proceeds through the more stable carbocation intermediate. (D) The C-H and C-X bonds that break must be anti.
#2775409