(a) Interpretation: The fragmentation mechanisms for the observation of strong peak at m / z = 74 in EI mass spectrum of 2-methylpentanoic acid is to be stated. Concept introduction: The EI mass spectrum is one of the types of mass spectrum in which an organic compound is vaporized and is analyzed by the bombardment with high energy electrons. When high energy passes by the molecule, it ejects an electron. The molecule results in the formation of the radical cation. This radical cation is then fragmented into small pieces. The rate of fragmentation depends upon the stability of the radical cation.

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Answer 1

Question

Chapter 20, Problem 20.56AP

Interpretation Introduction

(a)

Interpretation:

The fragmentation mechanisms for the observation of strong peak at m/z=74 in EI mass spectrum of 2-methylpentanoic acid is to be stated.

Concept introduction:

The EI mass spectrum is one of the types of mass spectrum in which an organic compound is vaporized and is analyzed by the bombardment with high energy electrons. When high energy passes by the molecule, it ejects an electron. The molecule results in the formation of the radical cation. This radical cation is then fragmented into small pieces. The rate of fragmentation depends upon the stability of the radical cation.

Interpretation Introduction

(b)

Interpretation:

The fragmentation mechanisms for the observation of strong peak at m/z=105 and

m/z=77 in EI mass spectrum of benzoic acid is to be stated.

Concept introduction:

The EI mass spectrum is one of the types of mass spectrum in which an organic compound is vaporized and is analyzed by the bombardment with high energy electrons. When high energy passes by the molecule it ejects an electron the molecules results in the formation of the radical cation. This radical cation is then fragmented into small pieces and rate of fragmentation depends upon the stability of the radical cation.

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2. 200 LOD For an unknown compound with a molecular ion of 101 m/z: a. Use the molecular ion to propose at least two molecular formulas. (show your work) b. What is the DU for each of your possible formulas? (show your work) C. Solve the structure and assign each of the following spectra. 8 6 4 2 (ppm) 150 100 50 ō (ppm) 4000 3000 2000 1500 1000 500 HAVENUMBERI-11

Answer 2

Question

Chapter 20, Problem 20.56AP

Interpretation Introduction

(a)

Interpretation:

The fragmentation mechanisms for the observation of strong peak at m/z=74 in EI mass spectrum of 2-methylpentanoic acid is to be stated.

Concept introduction:

The EI mass spectrum is one of the types of mass spectrum in which an organic compound is vaporized and is analyzed by the bombardment with high energy electrons. When high energy passes by the molecule, it ejects an electron. The molecule results in the formation of the radical cation. This radical cation is then fragmented into small pieces. The rate of fragmentation depends upon the stability of the radical cation.

Interpretation Introduction

(b)

Interpretation:

The fragmentation mechanisms for the observation of strong peak at m/z=105 and

m/z=77 in EI mass spectrum of benzoic acid is to be stated.

Concept introduction:

The EI mass spectrum is one of the types of mass spectrum in which an organic compound is vaporized and is analyzed by the bombardment with high energy electrons. When high energy passes by the molecule it ejects an electron the molecules results in the formation of the radical cation. This radical cation is then fragmented into small pieces and rate of fragmentation depends upon the stability of the radical cation.

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Answer 3

Question

Chapter 20, Problem 20.56AP

Interpretation Introduction

(a)

Interpretation:

The fragmentation mechanisms for the observation of strong peak at m/z=74 in EI mass spectrum of 2-methylpentanoic acid is to be stated.

Concept introduction:

The EI mass spectrum is one of the types of mass spectrum in which an organic compound is vaporized and is analyzed by the bombardment with high energy electrons. When high energy passes by the molecule, it ejects an electron. The molecule results in the formation of the radical cation. This radical cation is then fragmented into small pieces. The rate of fragmentation depends upon the stability of the radical cation.

Interpretation Introduction

(b)

Interpretation:

The fragmentation mechanisms for the observation of strong peak at m/z=105 and

m/z=77 in EI mass spectrum of benzoic acid is to be stated.

Concept introduction:

The EI mass spectrum is one of the types of mass spectrum in which an organic compound is vaporized and is analyzed by the bombardment with high energy electrons. When high energy passes by the molecule it ejects an electron the molecules results in the formation of the radical cation. This radical cation is then fragmented into small pieces and rate of fragmentation depends upon the stability of the radical cation.

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Answer 4

Question

Chapter 20, Problem 20.56AP

Interpretation Introduction

(a)

Interpretation:

The fragmentation mechanisms for the observation of strong peak at m/z=74 in EI mass spectrum of 2-methylpentanoic acid is to be stated.

Concept introduction:

The EI mass spectrum is one of the types of mass spectrum in which an organic compound is vaporized and is analyzed by the bombardment with high energy electrons. When high energy passes by the molecule, it ejects an electron. The molecule results in the formation of the radical cation. This radical cation is then fragmented into small pieces. The rate of fragmentation depends upon the stability of the radical cation.

Interpretation Introduction

(b)

Interpretation:

The fragmentation mechanisms for the observation of strong peak at m/z=105 and

m/z=77 in EI mass spectrum of benzoic acid is to be stated.

Concept introduction:

The EI mass spectrum is one of the types of mass spectrum in which an organic compound is vaporized and is analyzed by the bombardment with high energy electrons. When high energy passes by the molecule it ejects an electron the molecules results in the formation of the radical cation. This radical cation is then fragmented into small pieces and rate of fragmentation depends upon the stability of the radical cation.

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Answer 5

Chapter 20, Problem 20.56AP

Interpretation Introduction

(a)

Interpretation:

The fragmentation mechanisms for the observation of strong peak at m/z=74 in EI mass spectrum of 2-methylpentanoic acid is to be stated.

Concept introduction:

The EI mass spectrum is one of the types of mass spectrum in which an organic compound is vaporized and is analyzed by the bombardment with high energy electrons. When high energy passes by the molecule, it ejects an electron. The molecule results in the formation of the radical cation. This radical cation is then fragmented into small pieces. The rate of fragmentation depends upon the stability of the radical cation.

Interpretation Introduction

(b)

Interpretation:

The fragmentation mechanisms for the observation of strong peak at m/z=105 and

m/z=77 in EI mass spectrum of benzoic acid is to be stated.

Concept introduction:

The EI mass spectrum is one of the types of mass spectrum in which an organic compound is vaporized and is analyzed by the bombardment with high energy electrons. When high energy passes by the molecule it ejects an electron the molecules results in the formation of the radical cation. This radical cation is then fragmented into small pieces and rate of fragmentation depends upon the stability of the radical cation.

Answer 6

Chapter 20, Problem 20.56AP

Interpretation Introduction

(a)

Interpretation:

The fragmentation mechanisms for the observation of strong peak at m/z=74 in EI mass spectrum of 2-methylpentanoic acid is to be stated.

Concept introduction:

The EI mass spectrum is one of the types of mass spectrum in which an organic compound is vaporized and is analyzed by the bombardment with high energy electrons. When high energy passes by the molecule, it ejects an electron. The molecule results in the formation of the radical cation. This radical cation is then fragmented into small pieces. The rate of fragmentation depends upon the stability of the radical cation.

Answer 7

Chapter 20, Problem 20.56AP

Interpretation Introduction

(a)

Interpretation:

The fragmentation mechanisms for the observation of strong peak at m/z=74 in EI mass spectrum of 2-methylpentanoic acid is to be stated.

Concept introduction:

The EI mass spectrum is one of the types of mass spectrum in which an organic compound is vaporized and is analyzed by the bombardment with high energy electrons. When high energy passes by the molecule, it ejects an electron. The molecule results in the formation of the radical cation. This radical cation is then fragmented into small pieces. The rate of fragmentation depends upon the stability of the radical cation.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The fragmentation mechanisms for the observation of strong peak at m/z=105 and

m/z=77 in EI mass spectrum of benzoic acid is to be stated.

Concept introduction:

The EI mass spectrum is one of the types of mass spectrum in which an organic compound is vaporized and is analyzed by the bombardment with high energy electrons. When high energy passes by the molecule it ejects an electron the molecules results in the formation of the radical cation. This radical cation is then fragmented into small pieces and rate of fragmentation depends upon the stability of the radical cation.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The fragmentation mechanisms for the observation of strong peak at m/z=105 and

m/z=77 in EI mass spectrum of benzoic acid is to be stated.

Concept introduction:

The EI mass spectrum is one of the types of mass spectrum in which an organic compound is vaporized and is analyzed by the bombardment with high energy electrons. When high energy passes by the molecule it ejects an electron the molecules results in the formation of the radical cation. This radical cation is then fragmented into small pieces and rate of fragmentation depends upon the stability of the radical cation.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 20 - Prob. 20.1P Ch. 20 - Prob. 20.2P Ch. 20 - Prob. 20.3P Ch. 20 - Prob. 20.4P Ch. 20 - Prob. 20.5P Ch. 20 - Prob. 20.6P Ch. 20 - Prob. 20.7P Ch. 20 - Prob. 20.8P Ch. 20 - Prob. 20.9P Ch. 20 - Prob. 20.10P

Solution Summary: The author explains the fragmentation mechanisms for the observation of strong peak at m/z=74 in the EI mass spectrum.

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