CH3 25. Predict the base peak for CH3-C-ci CH3 A) m/z 15 B) m/z 92 C) m/z 43 D)

Question

CH3 25. Predict the base peak for CH3-C-ci CH3 A) m/z 15 B) m/z 92 C) m/z 43 D) m/z 57 E) m/z 77 26. An organic compound absorbs strongly in the IR at 1687 cm. On oxidation it is converted to benzoic acid. Its mass spectrum shows significant peaks at m/z 120, m/z 105 and m/z 77. This information is consistent with which of the following structures? A)I C6H5CCH3 B) C) D) C&HsCH2CH2CH3; E) C&HsCH;(CHs)2 CH3 27. The correct IUPAC substitutive name for CH3CCH2 CH-CH2 is OH A) 4-Penten-2-methyl-2-ol B) 4-Methyl-1-penten-2-ol C) 2-Methyl-4-penten-2-ol D) 4-Methyl-1-penten-4-ol E) 4-Hydroxy-4-methyl-1-pentene

Explanation / Answer

Ans 25. D) m/z 57

base peak is referred to as the tallest peak which can be observed in mass spectrometry that corresponds to the relative abundance of the species at Y axis.

Here the compound is 2-chloro-2-methyl propane , who base peak is observed at m/z 57.

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