m Relative Intensity - Which compound gives rise to the MS below? HN 58 100 N.N-dimethylethylamine...

Question

Question

Answer 1

Answer #1

N,N-dimethylethylamine will give rise to the spectrum.

These peaks arise due to following fragmentation pattern,

CH₃ has a molecular weight of 12+3=15 so, when a methyl fragment gets released the m/z value decreases by 15.

When CH₃CH₂ fragment gets released the m/z value decreases by 15+14=19. (Molecular weight of CH₃ fragment is 15 and CH₂ fragment is 14.)

maleculor 1on peak at 3 e H3 M/2-73 HyC NCH2CCH HyCteet N2 peak at S8 1 CHs 73-15 peak at 44 N 1 CH3 CH2 73-29

Answer 2

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