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104年 - 104 學士後西醫:有機化學#27032
> 試題詳解
28. Which of the following acids has the lowest pKa value?
(A)
(B)
(C)
(D)
(E)
答案:
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統計:
A(5), B(2), C(31), D(2), E(6) #937557
詳解 (共 2 筆)
菩提
B1 · 2015/09/25
#1154662
標準答案修正為 C
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B2 · 2025/11/25
#7155624
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私人筆記 (共 1 筆)
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2025/11/25
私人筆記#7589683
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24. Which of the following description(s) is(are) true for the following reaction? I: the solution of the products is optically active II: the products have stereocenters III: the products are meso compounds IV: the products are racemic mixture V: the reaction is enantioselective (A) V only (B) I and II (C) III and IV (D) II and V (E) II and IV
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25. Disulfide linkages in proteins come from between: (A) two methionine residues (B) two cysteine residues (C) a cysteine residue and a methionine residue (D) a threonine residue and a cysteine residue (E) a methionine residue and a threonine residue
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26. Which of the following represents the HOMO for the conjugated system in Leukotriene B4? (A) (B) (C) (D) (E)
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27. Which of the following is the most stable conformation for cis-4-methyl-2-pentene? (A) (B) (C) (D) (E) All of the above
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29. Which compound would undergo SNAr reaction most rapidly with sodium methoxide? (A) (B) (C) (D) (E)
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30. Which is the major product of the following reaction? (A) (B) (C) (D) (E) None of the above
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31. Provide the structure of the missing starting material to complete the reaction. (A) (B) (C) (D) (E)
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32. Which is the major product of the following reaction? (A) (B) (C) (D) (E)
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33. Provide the structure of the missing starting material to complete the reaction. (A) (B) (C) (D) (E)
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34. If one gauche interaction is 0.9 kcal/mol, what is the energy difference between cis-decalin and trans-decalin? (A) 0.9 kcal/mol (B) 1.8 kcal/mol (C) 2.7 kcal/mol (D) 3.6 kcal/mol (E) 4.5 kcal/mol
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