For the given set of compounds the chemical shift values to be compared and arranged in an increasing order. Concept Introduction : Chemical shift : The frequency of the proton signal in the spectrum with reference to the standard compound which may be TMS(Tetramethylsilane) shows signal at 0 ppm(parts per million). Chemical shift = signal frequency- reference frequency frequency of spectrometer ( 10 6 ) Bench mark values for protons in different electronic environment: Types of protons Chemical shift Alkynyl ~2 .5 Vinyl ~ 4.5 − 6.5 Aryl ~ 6.5 − 8

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Answer 1

Question

Chapter 15, Problem 51PP

Interpretation Introduction

Interpretation: For the given set of compounds the chemical shift values to be compared and arranged in an increasing order.

Concept Introduction:

Chemical shift: The frequency of the proton signal in the spectrum with reference to the standard compound which may be TMS(Tetramethylsilane) shows signal at 0 ppm(parts per million).

Chemical shift = signal frequency- reference frequencyfrequency of spectrometer(106)

Bench mark values for protons in different electronic environment:

Types of protons Chemical shift
Alkynyl ~2.5
Vinyl ~4.5−6.5
Aryl ~6.5−8

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Answer 2

Question

Chapter 15, Problem 51PP

Interpretation Introduction

Interpretation: For the given set of compounds the chemical shift values to be compared and arranged in an increasing order.

Concept Introduction:

Chemical shift: The frequency of the proton signal in the spectrum with reference to the standard compound which may be TMS(Tetramethylsilane) shows signal at 0 ppm(parts per million).

Chemical shift = signal frequency- reference frequencyfrequency of spectrometer(106)

Bench mark values for protons in different electronic environment:

Types of protons Chemical shift
Alkynyl ~2.5
Vinyl ~4.5−6.5
Aryl ~6.5−8

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Answer 3

Question

Chapter 15, Problem 51PP

Interpretation Introduction

Interpretation: For the given set of compounds the chemical shift values to be compared and arranged in an increasing order.

Concept Introduction:

Chemical shift: The frequency of the proton signal in the spectrum with reference to the standard compound which may be TMS(Tetramethylsilane) shows signal at 0 ppm(parts per million).

Chemical shift = signal frequency- reference frequencyfrequency of spectrometer(106)

Bench mark values for protons in different electronic environment:

Types of protons Chemical shift
Alkynyl ~2.5
Vinyl ~4.5−6.5
Aryl ~6.5−8

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Answer 4

Question

Chapter 15, Problem 51PP

Interpretation Introduction

Interpretation: For the given set of compounds the chemical shift values to be compared and arranged in an increasing order.

Concept Introduction:

Chemical shift: The frequency of the proton signal in the spectrum with reference to the standard compound which may be TMS(Tetramethylsilane) shows signal at 0 ppm(parts per million).

Chemical shift = signal frequency- reference frequencyfrequency of spectrometer(106)

Bench mark values for protons in different electronic environment:

Types of protons Chemical shift
Alkynyl ~2.5
Vinyl ~4.5−6.5
Aryl ~6.5−8

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Answer 5

Chapter 15, Problem 51PP

Interpretation Introduction

Interpretation: For the given set of compounds the chemical shift values to be compared and arranged in an increasing order.

Concept Introduction:

Chemical shift: The frequency of the proton signal in the spectrum with reference to the standard compound which may be TMS(Tetramethylsilane) shows signal at 0 ppm(parts per million).

Chemical shift = signal frequency- reference frequencyfrequency of spectrometer(106)

Bench mark values for protons in different electronic environment:

Types of protons Chemical shift
Alkynyl ~2.5
Vinyl ~4.5−6.5
Aryl ~6.5−8

Answer 6

Chapter 15, Problem 51PP

Interpretation Introduction

Interpretation: For the given set of compounds the chemical shift values to be compared and arranged in an increasing order.

Concept Introduction:

Chemical shift: The frequency of the proton signal in the spectrum with reference to the standard compound which may be TMS(Tetramethylsilane) shows signal at 0 ppm(parts per million).

Chemical shift = signal frequency- reference frequencyfrequency of spectrometer(106)

Bench mark values for protons in different electronic environment:

Types of protons Chemical shift
Alkynyl ~2.5
Vinyl ~4.5−6.5
Aryl ~6.5−8

Answer 7

Chapter 15, Problem 51PP

Interpretation Introduction

Interpretation: For the given set of compounds the chemical shift values to be compared and arranged in an increasing order.

Concept Introduction:

Chemical shift: The frequency of the proton signal in the spectrum with reference to the standard compound which may be TMS(Tetramethylsilane) shows signal at 0 ppm(parts per million).

Chemical shift = signal frequency- reference frequencyfrequency of spectrometer(106)

Bench mark values for protons in different electronic environment:

Types of protons Chemical shift
Alkynyl ~2.5
Vinyl ~4.5−6.5
Aryl ~6.5−8

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 15.4 - Prob. 1LTS Ch. 15.4 - Prob. 1PTS Ch. 15.4 - Prob. 2PTS Ch. 15.4 - Prob. 3PTS Ch. 15.4 - Prob. 4ATS Ch. 15.4 - Prob. 2LTS Ch. 15.5 - Prob. 3LTS Ch. 15.6 - Prob. 4LTS Ch. 15.6 - Prob. 11PTS Ch. 15.6 - Prob. 12PTS

Types of protons	Chemical shift
Alkynyl	~2.5
Vinyl	~4.5−6.5
Aryl	~6.5−8

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