質譜儀

27. For the mass spectrum of compound Y, we found 3 lines in the molecular ion region (M+ , M+ +2, M+ +4), shows the pea...
47. A compound which EI-MS spectrum is shown below, has M+ = m/z 156, M+2 = m/z 158, and m/z = 77 (base peak). What is...
14. Select the structure of a compound C6H14 with a base peak at m/z 43. (A) CH3CH2CH2CH2CH2CH3 (B) (CH3CH2)2CHCH3 (C)...
14. Which molecular formula is consistent with the following mass spectrum data? at m/z= 84, relative height...
5. Which of the following is not a major peak in the Mass spectrum of isopentane? (A) 29 (B) 43 (C) 57 (D) 60 (E) 72
17. 下列哪一個特定術語與有機化合物的質譜分析無關？ (A) α -cleavage (B) McLafferty rearrangement (C) coupling consta...
34. 某有機化合物在質譜中所顯示的部分訊號如下，其中 m/z = 84 為此化合物的分子離子 (molecular ion)訊號，請問此化合物最有...
77. Which of the following compounds exhibits the pattern of m/z values: 41, 43, 57, 87, 101, 116? (A) n-butyl n-pr...

寬識(已上榜、感謝阿摩與前輩)