The approximate frequencies for distinctive peaks in the IR spectrum to state whether the product was pure cyclohexene, pure cyclohexanol or a mixture of cyclohexene and cyclohexanol. Interpretation: The approximate frequencies for distinctive peaks in the IR spectrum to state whether the product was pure cyclohexene, pure cyclohexanol or a mixture of cyclohexene and cyclohexanol are to be explained. Concept introduction: An IR spectrum is a graph for the energy absorbed by a molecule as a function of the frequency or wavelength of light . Alkanes , alkenes and alkynes have characteristic C − H stretching frequencies. Isolated alkenes have value 1640 − 1680 cm − 1 and that of conjugated alkenes have 1620 − 1640 cm − 1 frequencies.

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Answer 1

Question

Chapter 12, Problem 12.19SP

(a)

Interpretation Introduction

To determine: The approximate frequencies for distinctive peaks in the IR spectrum to state whether the product was pure cyclohexene, pure cyclohexanol or a mixture of cyclohexene and cyclohexanol.

Interpretation: The approximate frequencies for distinctive peaks in the IR spectrum to state whether the product was pure cyclohexene, pure cyclohexanol or a mixture of cyclohexene and cyclohexanol are to be explained.

Concept introduction: An IR spectrum is a graph for the energy absorbed by a molecule as a function of the frequency or wavelength of light. Alkanes, alkenes and alkynes have characteristic C−H stretching frequencies. Isolated alkenes have value 1640−1680 cm−1 and that of conjugated alkenes have 1620−1640 cm−1 frequencies.

(b)

Interpretation Introduction

To determine: The reason as to why mass spectrometry might not be a reasonable way to distinguish cyclohexene from cyclohexanol.

Interpretation: The reason as to why mass spectrometry might not be a reasonable way to distinguish cyclohexene from cyclohexanol is to be explained.

Concept introduction: Mass spectroscopy provides a reliable molecular weight for an unknown compound and also gives us the information about the molecular formula as well.

Fragmentation gives the resonance stabilized cations whenever possible. Loss of a small molecule is usually indicated by a fragment peak having an even mass number corresponding to loss of an even mass number.

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Answer 2

Question

Chapter 12, Problem 12.19SP

(a)

Interpretation Introduction

To determine: The approximate frequencies for distinctive peaks in the IR spectrum to state whether the product was pure cyclohexene, pure cyclohexanol or a mixture of cyclohexene and cyclohexanol.

Interpretation: The approximate frequencies for distinctive peaks in the IR spectrum to state whether the product was pure cyclohexene, pure cyclohexanol or a mixture of cyclohexene and cyclohexanol are to be explained.

Concept introduction: An IR spectrum is a graph for the energy absorbed by a molecule as a function of the frequency or wavelength of light. Alkanes, alkenes and alkynes have characteristic C−H stretching frequencies. Isolated alkenes have value 1640−1680 cm−1 and that of conjugated alkenes have 1620−1640 cm−1 frequencies.

(b)

Interpretation Introduction

To determine: The reason as to why mass spectrometry might not be a reasonable way to distinguish cyclohexene from cyclohexanol.

Interpretation: The reason as to why mass spectrometry might not be a reasonable way to distinguish cyclohexene from cyclohexanol is to be explained.

Concept introduction: Mass spectroscopy provides a reliable molecular weight for an unknown compound and also gives us the information about the molecular formula as well.

Fragmentation gives the resonance stabilized cations whenever possible. Loss of a small molecule is usually indicated by a fragment peak having an even mass number corresponding to loss of an even mass number.

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Answer 3

Question

Chapter 12, Problem 12.19SP

(a)

Interpretation Introduction

To determine: The approximate frequencies for distinctive peaks in the IR spectrum to state whether the product was pure cyclohexene, pure cyclohexanol or a mixture of cyclohexene and cyclohexanol.

Interpretation: The approximate frequencies for distinctive peaks in the IR spectrum to state whether the product was pure cyclohexene, pure cyclohexanol or a mixture of cyclohexene and cyclohexanol are to be explained.

Concept introduction: An IR spectrum is a graph for the energy absorbed by a molecule as a function of the frequency or wavelength of light. Alkanes, alkenes and alkynes have characteristic C−H stretching frequencies. Isolated alkenes have value 1640−1680 cm−1 and that of conjugated alkenes have 1620−1640 cm−1 frequencies.

(b)

Interpretation Introduction

To determine: The reason as to why mass spectrometry might not be a reasonable way to distinguish cyclohexene from cyclohexanol.

Interpretation: The reason as to why mass spectrometry might not be a reasonable way to distinguish cyclohexene from cyclohexanol is to be explained.

Concept introduction: Mass spectroscopy provides a reliable molecular weight for an unknown compound and also gives us the information about the molecular formula as well.

Fragmentation gives the resonance stabilized cations whenever possible. Loss of a small molecule is usually indicated by a fragment peak having an even mass number corresponding to loss of an even mass number.

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Answer 4

Question

Chapter 12, Problem 12.19SP

(a)

Interpretation Introduction

To determine: The approximate frequencies for distinctive peaks in the IR spectrum to state whether the product was pure cyclohexene, pure cyclohexanol or a mixture of cyclohexene and cyclohexanol.

Interpretation: The approximate frequencies for distinctive peaks in the IR spectrum to state whether the product was pure cyclohexene, pure cyclohexanol or a mixture of cyclohexene and cyclohexanol are to be explained.

Concept introduction: An IR spectrum is a graph for the energy absorbed by a molecule as a function of the frequency or wavelength of light. Alkanes, alkenes and alkynes have characteristic C−H stretching frequencies. Isolated alkenes have value 1640−1680 cm−1 and that of conjugated alkenes have 1620−1640 cm−1 frequencies.

(b)

Interpretation Introduction

To determine: The reason as to why mass spectrometry might not be a reasonable way to distinguish cyclohexene from cyclohexanol.

Interpretation: The reason as to why mass spectrometry might not be a reasonable way to distinguish cyclohexene from cyclohexanol is to be explained.

Concept introduction: Mass spectroscopy provides a reliable molecular weight for an unknown compound and also gives us the information about the molecular formula as well.

Fragmentation gives the resonance stabilized cations whenever possible. Loss of a small molecule is usually indicated by a fragment peak having an even mass number corresponding to loss of an even mass number.

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Answer 5

Chapter 12, Problem 12.19SP

(a)

Interpretation Introduction

To determine: The approximate frequencies for distinctive peaks in the IR spectrum to state whether the product was pure cyclohexene, pure cyclohexanol or a mixture of cyclohexene and cyclohexanol.

Interpretation: The approximate frequencies for distinctive peaks in the IR spectrum to state whether the product was pure cyclohexene, pure cyclohexanol or a mixture of cyclohexene and cyclohexanol are to be explained.

Concept introduction: An IR spectrum is a graph for the energy absorbed by a molecule as a function of the frequency or wavelength of light. Alkanes, alkenes and alkynes have characteristic C−H stretching frequencies. Isolated alkenes have value 1640−1680 cm−1 and that of conjugated alkenes have 1620−1640 cm−1 frequencies.

(b)

Interpretation Introduction

To determine: The reason as to why mass spectrometry might not be a reasonable way to distinguish cyclohexene from cyclohexanol.

Interpretation: The reason as to why mass spectrometry might not be a reasonable way to distinguish cyclohexene from cyclohexanol is to be explained.

Concept introduction: Mass spectroscopy provides a reliable molecular weight for an unknown compound and also gives us the information about the molecular formula as well.

Fragmentation gives the resonance stabilized cations whenever possible. Loss of a small molecule is usually indicated by a fragment peak having an even mass number corresponding to loss of an even mass number.

Answer 6

Chapter 12, Problem 12.19SP

(a)

Interpretation Introduction

To determine: The approximate frequencies for distinctive peaks in the IR spectrum to state whether the product was pure cyclohexene, pure cyclohexanol or a mixture of cyclohexene and cyclohexanol.

Interpretation: The approximate frequencies for distinctive peaks in the IR spectrum to state whether the product was pure cyclohexene, pure cyclohexanol or a mixture of cyclohexene and cyclohexanol are to be explained.

Concept introduction: An IR spectrum is a graph for the energy absorbed by a molecule as a function of the frequency or wavelength of light. Alkanes, alkenes and alkynes have characteristic C−H stretching frequencies. Isolated alkenes have value 1640−1680 cm−1 and that of conjugated alkenes have 1620−1640 cm−1 frequencies.

Answer 7

Chapter 12, Problem 12.19SP

(a)

Interpretation Introduction

To determine: The approximate frequencies for distinctive peaks in the IR spectrum to state whether the product was pure cyclohexene, pure cyclohexanol or a mixture of cyclohexene and cyclohexanol.

Interpretation: The approximate frequencies for distinctive peaks in the IR spectrum to state whether the product was pure cyclohexene, pure cyclohexanol or a mixture of cyclohexene and cyclohexanol are to be explained.

Concept introduction: An IR spectrum is a graph for the energy absorbed by a molecule as a function of the frequency or wavelength of light. Alkanes, alkenes and alkynes have characteristic C−H stretching frequencies. Isolated alkenes have value 1640−1680 cm−1 and that of conjugated alkenes have 1620−1640 cm−1 frequencies.

Answer 8

(b)

Interpretation Introduction

To determine: The reason as to why mass spectrometry might not be a reasonable way to distinguish cyclohexene from cyclohexanol.

Interpretation: The reason as to why mass spectrometry might not be a reasonable way to distinguish cyclohexene from cyclohexanol is to be explained.

Concept introduction: Mass spectroscopy provides a reliable molecular weight for an unknown compound and also gives us the information about the molecular formula as well.

Fragmentation gives the resonance stabilized cations whenever possible. Loss of a small molecule is usually indicated by a fragment peak having an even mass number corresponding to loss of an even mass number.

Answer 9

(b)

Interpretation Introduction

To determine: The reason as to why mass spectrometry might not be a reasonable way to distinguish cyclohexene from cyclohexanol.

Interpretation: The reason as to why mass spectrometry might not be a reasonable way to distinguish cyclohexene from cyclohexanol is to be explained.

Concept introduction: Mass spectroscopy provides a reliable molecular weight for an unknown compound and also gives us the information about the molecular formula as well.

Fragmentation gives the resonance stabilized cations whenever possible. Loss of a small molecule is usually indicated by a fragment peak having an even mass number corresponding to loss of an even mass number.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 12.3 - Complete the following conversion table. (cm1)...Ch. 12.5 - Which of the bonds shown in red are expected to...Ch. 12.7C - For each hydrocarbon spectrum, determine whether...Ch. 12.9A - Spectra are given for three compounds. Each...Ch. 12.10 - The infrared spectra for three compounds are...Ch. 12.12 - Prob. 12.6P Ch. 12.14B - Identify which of these four mass spectra indicate...Ch. 12.15A - Show the fragmentation that accounts for the...Ch. 12.15A - Show the fragmentations that give rise to the...Ch. 12.15B - Ethers are not easily differentiated by their...

Solution Summary: The author explains the approximate frequencies for distinctive peaks in the IR spectrum to state whether the product was pure cyclohexene or a mixture.

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