Chapter 16, Problem 16.29YT

Interpretation Introduction

Interpretation:

The $\text{M+1}$ peak in Figure 16-35 is to be labeled. Also, the $\text{M+1}$ peak in the mass spectrum of $\text{ethylbenzene}$ is to be identified and labeled in Problem 16.33.

Concept introduction:

The ${\text{M}}^{+}$ peak of hexane appears at m/z = 86; there is a small peak at m/z = 87 in Figure 16-35, too. This peak is called the $\text{M+1}$ peak. The ${\text{M}}^{+}$ of $\text{ethylbenzene}$ in problem 16-35 appears at m/z = $\text{1}0\text{6}$, and the base peak is at m/z = $\text{1}0\text{7}$. The ratio of the $\text{M+1}$ peak intensity to the ${\text{M}}^{+}$ peak intensity increases as the number of carbon atoms in the molecule increases.