Chapter 16, Problem 16.33YT

Interpretation Introduction

Interpretation:

Values of the ${\text{M}}^{\text{+}}\text{ and M + 1}$ peaks are to be plugged into equation $\text{16 - 7}$ to verify the estimate of seven carbon atoms in unknown $3$.

Concept introduction:

The total number of carbon atoms in a molecule can be computed from the intensity of the $\text{M + 1}$ peak relative to that of the ${\text{M}}^{\text{+}}$ peak.

The equation $\text{Number of C atoms }\approx \frac{\text{Intensity of M + 1}}{{\text{Intemsity of M}}^{\text{+}}}\text{ × }\frac{\text{100 \%}}{\text{1}\text{.1 \%}}$ is used to calculate the number of carbon atoms in a molecule from mass spectrum analysis.