What is the molecular formula of this compound? m/z intensity
84 M⁺ $\bullet$ 10.00
85 0.56
86 0.04

Question

What is the molecular formula of this compound? m/z intensity 84 M⁺$\bullet$ 10.00 85 0.56 86 0.04

Quizplus · Accepted Answer

By analyzing the m/z (mass-to-charge ratio) values and their respective intensities, it can be deduced that the molecular formula of the compound is C₅H₈O. The m/z value of 84 corresponds to the ion [MF1F1F1S1^F1F1F10F1F1F1S1_F1F1F10] which contains 15 carbon atoms, 18 hydrogen atoms, and 2 oxygen atoms. The presence of sulfur and phosphorus can be confirmed by the other m/z values (85 and 86) which have low intensities compared to that of m/z 84. Therefore, the best choice is B, as it matches the formula obtained by deducing the compound's elemental composition from the mass spectrum.

What Is the Molecular Formula of This Compound? M/z Intensity ∙\bullet∙

What Is the Molecular Formula of This Compound? M/z Intensity $\bullet$