Chapter 14, Problem 44PP

(a)

Interpretation Introduction

Interpretation:

A signal at $\text{M-13}$ that is equal in height to the $\text{M-15}$ peak is whether expected or not has to be explained.

Concept introduction:

Mass spectroscopy: It is a form of spectroscopic technique which is used for the elucidation of the molecular formula and molecular weight of the compound, depending upon the mass of the molecule

Molecular ion peak${\text{(M)}}^{\text{+}•}$: It is defined as the heaviest peak in the IR spectrum of the molecule which represents the largest molecular ion in the given molecule with greater m/z value.

Base peak: It is the tallest peak in the spectrum.

The ${\text{(M+1)}}^{\text{+}•}$ peak: It denotes the peak that arises next to molecular ion peak in the mass spectrum. The peak arises due to the presence of the isotope of carbon $\left({}^{\text{13}}\text{C}\right).$

(b)

Interpretation Introduction

Interpretation:

A signal at $\text{M-27}$ that is equal in height to the $\text{M-29}$ peak is whether expected or not has to be explained.

Concept introduction:

Mass spectroscopy: It is a form of spectroscopic technique which is used for the elucidation of the molecular formula and molecular weight of the compound, depending upon the mass of the molecule

Molecular ion peak${\text{(M)}}^{\text{+}•}$: It is defined as the heaviest peak in the IR spectrum of the molecule which represents the largest molecular ion in the given molecule with greater m/z value.

Base peak: It is the tallest peak in the spectrum.

The ${\text{(M+1)}}^{\text{+}•}$ peak: It denotes the peak that arises next to molecular ion peak in the mass spectrum. The peak arises due to the presence of the isotope of carbon $\left({}^{\text{13}}\text{C}\right).$

(c)

Interpretation Introduction

Interpretation:

A signal at $\text{M-77}$ that is equal in height to the $\text{M-79}$ peak is whether expected or not has to be explained.

Concept introduction:

Mass spectroscopy: It is a form of spectroscopic technique which is used for the elucidation of the molecular formula and molecular weight of the compound, depending upon the mass of the molecule

Molecular ion peak${\text{(M)}}^{\text{+}•}$: It is defined as the heaviest peak in the IR spectrum of the molecule which represents the largest molecular ion in the given molecule with greater m/z value.

Base peak: It is the tallest peak in the spectrum.

The ${\text{(M+1)}}^{\text{+}•}$ peak: It denotes the peak that arises next to molecular ion peak in the mass spectrum. The peak arises due to the presence of the isotope of carbon $\left({}^{\text{13}}\text{C}\right).$