Question

References The mass spectrum of octanoic acid, CH3(CH2)COOH, exhibits a series of peaks differing by 14 amu at m/ 29, 43, 57, 71, 85, and 99 1 pt Draw the structure of the fragment resulting in the m/z 57 peak 1 pt 1 pt .You do not have to consider stereochemistry You do not have to explicitly draw H atoms. In cases where there is more than one answer, just draw one. .Do not use the square brackets tool in your answer 1 pt 1 pt 1 pt 1 pt 1 pt 1 pt 1 pt All methyl esters of long-chain aliphatic acids (for example, methyl tetradecanoate, C13H27COOCH3) show significant fragment ions at m/z 74, 59, and 31. Draw the structure of the ion that gives the m/z 31 peak. In cases where there is more than one answer, just draw one. You do not have to include lone pairs in your answer. Include all valence radical electrons in your answer. Do not use the square brackets tool in your answer. a e O00- Visited ChemDoodle" Draw the structure of the molecular ion responsible for the m/z 58 peak in the mass spectrum of 2-methyl-2-butanamine. You do not have to consider stereochemistry You do not have to include lone pairs in your answer In cases where there is more than one answer, just draw one. Do not use the square brackets tool in your answer. ChemDoodle

Answer 1

Solution:

The structure and fragmentation are given in attached sheet.

CH3-n2)e coh OH Ch3-CH2- CH2-CH2-CM2CM2-CMceot +1e -20 M3CH2-CH2-CH CM2-CM2 2-CUDH Base peak -Cau2-cn2-Cua-ceon) eh3-CH2-CM2-e12 11 euzcu212 C-o eu3 (meteyltetra decanoate He 2e :0.Cu3 cugcua2 m ニ-31 Clons mles (c) 2-metny. 2-buka ne Ma +12 - 22 CH cy2 C4 cup C-cun 1 cun p Base peak EN