Which of the following is expected to be the base peak in the mass spectrum of CH₃(CH₂)₄OH?

Question

Quizplus · Accepted Answer

The base peak in a mass spectrum is the tallest peak, and it represents the most abundant fragment ion. In this compound, the most abundant fragment ion is expected to be the loss of a neutral CH3CH=CH- unit, which has a mass of 56 Da. This would result in a fragment ion with a mass of 303-56=247 Da, which corresponds to the ion with m/z 42. Therefore, choice C is expected to be the base peak in the mass spectrum of this compound.

Which of the Following Is Expected to Be the Base