11.3 Spectroscopic identification of organic compounds

Description

[N/A]

Directly related questions

20N.1.sl.TZ0.29:
What is the index of hydrogen deficiency (IHD) in cyclohexanol?

A.   $0$

B.   $1$

C.   $2$

D.   $3$
20N.1.sl.TZ0.29:
What is the index of hydrogen deficiency (IHD) in cyclohexanol?

A.   $0$

B.   $1$

C.   $2$

D.   $3$
20N.2.hl.TZ0.2d:
The IR spectrum of one of the compounds is shown:

COBLENTZ SOCIETY. Collection © 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.

Deduce, giving a reason, the compound producing this spectrum.
20N.2.hl.TZ0.d:
The IR spectrum of one of the compounds is shown:

COBLENTZ SOCIETY. Collection © 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.

Deduce, giving a reason, the compound producing this spectrum.
20N.2.hl.TZ0.2d:
The IR spectrum of one of the compounds is shown:

COBLENTZ SOCIETY. Collection © 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.

Deduce, giving a reason, the compound producing this spectrum.
17N.2.sl.TZ0.6a.iii: Deduce the number of signals and the ratio of areas under the signals in the 1H NMR spectra of...
17N.2.sl.TZ0.6a.iii: Deduce the number of signals and the ratio of areas under the signals in the 1H NMR spectra of...
17N.2.sl.TZ0.a.iii: Deduce the number of signals and the ratio of areas under the signals in the 1H NMR spectra of...
17N.3.hl.TZ0.22a.i: Both spectra show a peak at wavenumber 1700 cm–1. Identify the bond responsible for this peak.
17N.3.hl.TZ0.22a.i: Both spectra show a peak at wavenumber 1700 cm–1. Identify the bond responsible for this peak.
17N.3.hl.TZ0.a.i: Both spectra show a peak at wavenumber 1700 cm–1. Identify the bond responsible for this peak.
21M.1.sl.TZ1.30:
Determine the index of hydrogen deficiency (IHD) of paracetamol.

A. 3

B. 4

C. 5

D. 6
21M.1.sl.TZ1.30:
Determine the index of hydrogen deficiency (IHD) of paracetamol.

A. 3

B. 4

C. 5

D. 6
21M.2.hl.TZ1.5b(i): Justify why ethene has only a single signal in its 1H NMR spectrum.
21M.2.hl.TZ1.5b(i): Justify why ethene has only a single signal in its 1H NMR spectrum.
21M.2.hl.TZ1.b(i): Justify why ethene has only a single signal in its 1H NMR spectrum.
21M.2.sl.TZ2.4e(i): Deduce two features of this molecule that can be obtained from the mass spectrum. Use section 28...
21M.2.sl.TZ2.4e(i): Deduce two features of this molecule that can be obtained from the mass spectrum. Use section 28...
21M.2.sl.TZ2.e(i): Deduce two features of this molecule that can be obtained from the mass spectrum. Use section 28...
21M.2.sl.TZ2.4e(ii): Identify the bond responsible for the absorption at A in the infrared spectrum. Use section 26 of...
21M.2.sl.TZ2.4e(ii): Identify the bond responsible for the absorption at A in the infrared spectrum. Use section 26 of...
21M.2.sl.TZ2.e(ii): Identify the bond responsible for the absorption at A in the infrared spectrum. Use section 26 of...
21M.2.hl.TZ2.4g(i): Deduce two features of this molecule that can be obtained from the mass spectrum. Use section 28...
21M.2.hl.TZ2.4g(i): Deduce two features of this molecule that can be obtained from the mass spectrum. Use section 28...
21M.2.hl.TZ2.g(i): Deduce two features of this molecule that can be obtained from the mass spectrum. Use section 28...
21M.2.hl.TZ2.4g(ii): Identify the bond responsible for the absorption at A in the infrared spectrum. Use section 26 of...
21M.2.hl.TZ2.4g(ii): Identify the bond responsible for the absorption at A in the infrared spectrum. Use section 26 of...
21M.2.hl.TZ2.g(ii): Identify the bond responsible for the absorption at A in the infrared spectrum. Use section 26 of...
21M.2.hl.TZ2.4g(iii):
Deduce the identity of the unknown compound using the previous information, the ¹H NMR spectrum and section 27 of the data booklet.

SDBS, National Institute of Advanced Industrial Science and Technology (AIST).
21M.2.hl.TZ2.4g(iii):
Deduce the identity of the unknown compound using the previous information, the ¹H NMR spectrum and section 27 of the data booklet.

SDBS, National Institute of Advanced Industrial Science and Technology (AIST).
21M.2.hl.TZ2.g(iii):
Deduce the identity of the unknown compound using the previous information, the ¹H NMR spectrum and section 27 of the data booklet.

SDBS, National Institute of Advanced Industrial Science and Technology (AIST).
18M.2.hl.TZ1.1l.i:
Predict the number of signals in the ¹H NMR spectrum of urea.
18M.2.hl.TZ1.1l.i:
Predict the number of signals in the ¹H NMR spectrum of urea.
18M.2.hl.TZ1.l.i:
Predict the number of signals in the ¹H NMR spectrum of urea.
18M.2.sl.TZ1.1h:
The IR spectrum of urea is shown below.

Identify the bonds causing the absorptions at 3450 cm⁻¹ and 1700 cm⁻¹ using section 26 of the data booklet.
18M.2.sl.TZ1.1h:
The IR spectrum of urea is shown below.

Identify the bonds causing the absorptions at 3450 cm⁻¹ and 1700 cm⁻¹ using section 26 of the data booklet.
18M.2.sl.TZ1.h:
The IR spectrum of urea is shown below.

Identify the bonds causing the absorptions at 3450 cm⁻¹ and 1700 cm⁻¹ using section 26 of the data booklet.
18M.2.sl.TZ1.1i:
Predict the number of signals in the ¹H NMR spectrum of urea.
18M.2.sl.TZ1.1i:
Predict the number of signals in the ¹H NMR spectrum of urea.
18M.2.sl.TZ1.i:
Predict the number of signals in the ¹H NMR spectrum of urea.
18M.1.sl.TZ2.28: Which feature of a molecule does infrared spectrometry detect? A. molecular mass B. ...
18M.1.sl.TZ2.28: Which feature of a molecule does infrared spectrometry detect? A. molecular mass B. ...
18M.2.sl.TZ2.7c.i:
Deduce the molecular formula of the compound.
18M.2.sl.TZ2.7c.i:
Deduce the molecular formula of the compound.
18M.2.sl.TZ2.c.i:
Deduce the molecular formula of the compound.
18M.2.sl.TZ2.7c.iii:
Deduce full structural formulas of two possible isomers of the unknown compound, both of which are esters.
18M.2.sl.TZ2.7c.iii:
Deduce full structural formulas of two possible isomers of the unknown compound, both of which are esters.
18M.2.sl.TZ2.c.iii:
Deduce full structural formulas of two possible isomers of the unknown compound, both of which are esters.
18M.3.sl.TZ2.7b:
Deduce the number of ¹H NMR signals produced by the zwitterion form of alanine.
18M.3.sl.TZ2.7b:
Deduce the number of ¹H NMR signals produced by the zwitterion form of alanine.
18M.3.sl.TZ2.b:
Deduce the number of ¹H NMR signals produced by the zwitterion form of alanine.
21N.1.sl.TZ0.5: Consider the mass spectrum of an element: What is the relative atomic mass of this...
21N.1.sl.TZ0.5: Consider the mass spectrum of an element: What is the relative atomic mass of this...
21N.2.hl.TZ0.1c:
Identify each compound from the spectra given, use absorptions from the range of 1700 cm⁻¹ to 3500 cm⁻¹. Explain the reason for your choice, referring to section 26 of the data booklet.
21N.2.hl.TZ0.1c:
Identify each compound from the spectra given, use absorptions from the range of 1700 cm⁻¹ to 3500 cm⁻¹. Explain the reason for your choice, referring to section 26 of the data booklet.
21N.2.hl.TZ0.c:
Identify each compound from the spectra given, use absorptions from the range of 1700 cm⁻¹ to 3500 cm⁻¹. Explain the reason for your choice, referring to section 26 of the data booklet.
22M.1.sl.TZ1.29:
Which compound produces this mass spectrum?

^{[Spectral Database for Organic Compounds, SDBS. SDBS Compounds and Spectral Search. [graph] Available at:}
^{https://sdbs.db.aist.go.jp [Accessed 3 January 2019].]}
22M.1.sl.TZ1.29:
Which compound produces this mass spectrum?

^{[Spectral Database for Organic Compounds, SDBS. SDBS Compounds and Spectral Search. [graph] Available at:}
^{https://sdbs.db.aist.go.jp [Accessed 3 January 2019].]}
22M.1.sl.TZ1.30:
What is the index of hydrogen deficiency (IHD) of this molecule?

Paracetamol (acetaminophen)

A. 3

B. 4

C. 5

D. 6
22M.1.sl.TZ1.30:
What is the index of hydrogen deficiency (IHD) of this molecule?

Paracetamol (acetaminophen)

A. 3

B. 4

C. 5

D. 6
22M.1.sl.TZ2.28: How many signals are observed in the 1H NMR spectrum of this compound?A. 1 B. 2 C. 3 D. 4
22M.1.sl.TZ2.28: How many signals are observed in the 1H NMR spectrum of this compound?A. 1 B. 2 C. 3 D. 4
22M.2.hl.TZ2.8d(iv):
Suggest two differences in the ¹H NMR of but-2-ene and the organic product from (d)(ii).
22M.2.hl.TZ2.8d(iv):
Suggest two differences in the ¹H NMR of but-2-ene and the organic product from (d)(ii).
22M.2.hl.TZ2.d(iv):
Suggest two differences in the ¹H NMR of but-2-ene and the organic product from (d)(ii).
19M.3.hl.TZ2.5b:
The infrared (IR) spectrum of polyethene is given.

Suggest how the IR spectrum of polychloroethene would diff er, using section 26 of the data booklet.
19M.3.hl.TZ2.5b:
The infrared (IR) spectrum of polyethene is given.

Suggest how the IR spectrum of polychloroethene would diff er, using section 26 of the data booklet.
19M.3.hl.TZ2.b:
The infrared (IR) spectrum of polyethene is given.

Suggest how the IR spectrum of polychloroethene would diff er, using section 26 of the data booklet.
19M.1.hl.TZ2.39:
What can be deduced from the infrared (IR) spectrum of a compound?

A. Number of hydrogens

B. Number of hydrogen environments

C. Bonds present

D. Molar mass
19M.1.hl.TZ2.39:
What can be deduced from the infrared (IR) spectrum of a compound?

A. Number of hydrogens

B. Number of hydrogen environments

C. Bonds present

D. Molar mass
19M.1.sl.TZ2.30:
What can be deduced from the infrared (IR) spectrum of a compound?

A. Number of hydrogens

B. Number of hydrogen environments

C. Bonds present

D. Molar mass
19M.1.sl.TZ2.30:
What can be deduced from the infrared (IR) spectrum of a compound?

A. Number of hydrogens

B. Number of hydrogen environments

C. Bonds present

D. Molar mass
22N.1.sl.TZ0.30: What information about 2-hydroxybutanoic acid can be inferred through mass spectrometry, MS,...
22N.1.sl.TZ0.30: What information about 2-hydroxybutanoic acid can be inferred through mass spectrometry, MS,...
22N.2.sl.TZ0.2b: Determine the index of hydrogen deficiency, IHD, of chloroquine.
22N.2.sl.TZ0.2b: Determine the index of hydrogen deficiency, IHD, of chloroquine.
22N.2.sl.TZ0.b: Determine the index of hydrogen deficiency, IHD, of chloroquine.
22N.2.hl.TZ0.2c:
Determine the index of hydrogen deficiency, IHD, of chloroquine.
22N.2.hl.TZ0.2c:
Determine the index of hydrogen deficiency, IHD, of chloroquine.
22N.2.hl.TZ0.c:
Determine the index of hydrogen deficiency, IHD, of chloroquine.
17N.1.sl.TZ0.29:
What information is provided by ¹H NMR, MS and IR for an organic compound?

I. ¹H NMR: chemical environment(s) of protons
II. MS: fragmentation pattern
III. IR: types of functional group

A. I and II only

B. I and III only

C. II and III only

D. I, II and III
17N.1.sl.TZ0.29:
What information is provided by ¹H NMR, MS and IR for an organic compound?

I. ¹H NMR: chemical environment(s) of protons
II. MS: fragmentation pattern
III. IR: types of functional group

A. I and II only

B. I and III only

C. II and III only

D. I, II and III
17N.3.sl.TZ0.7b.ii:
One of the two infrared (IR) spectra is that of polyethene and the other of polytetrafluoroethene (PTFE).

Deduce, with a reason, which spectrum is that of PTFE. Infrared data is given in section 26 of the data booklet.
17N.3.sl.TZ0.7b.ii:
One of the two infrared (IR) spectra is that of polyethene and the other of polytetrafluoroethene (PTFE).

Deduce, with a reason, which spectrum is that of PTFE. Infrared data is given in section 26 of the data booklet.
17N.3.sl.TZ0.b.ii:
One of the two infrared (IR) spectra is that of polyethene and the other of polytetrafluoroethene (PTFE).

Deduce, with a reason, which spectrum is that of PTFE. Infrared data is given in section 26 of the data booklet.
17N.3.hl.TZ0.22a.ii:
Deduce which spectrum belongs to paracetamol, giving two reasons for your choice. Use section 26 of the data booklet.
17N.3.hl.TZ0.22a.ii:
Deduce which spectrum belongs to paracetamol, giving two reasons for your choice. Use section 26 of the data booklet.
17N.3.hl.TZ0.a.ii:
Deduce which spectrum belongs to paracetamol, giving two reasons for your choice. Use section 26 of the data booklet.
18M.2.hl.TZ1.1j:
The mass spectrum of urea is shown below.

Identify the species responsible for the peaks at m/z = 60 and 44.
18M.2.hl.TZ1.1j:
The mass spectrum of urea is shown below.

Identify the species responsible for the peaks at m/z = 60 and 44.
18M.2.hl.TZ1.j:
The mass spectrum of urea is shown below.

Identify the species responsible for the peaks at m/z = 60 and 44.
18M.2.hl.TZ1.1k:
The IR spectrum of urea is shown below.

Identify the bonds causing the absorptions at 3450 cm⁻¹ and 1700 cm⁻¹ using section 26 of the data booklet.
18M.2.hl.TZ1.1k:
The IR spectrum of urea is shown below.

Identify the bonds causing the absorptions at 3450 cm⁻¹ and 1700 cm⁻¹ using section 26 of the data booklet.
18M.2.hl.TZ1.k:
The IR spectrum of urea is shown below.

Identify the bonds causing the absorptions at 3450 cm⁻¹ and 1700 cm⁻¹ using section 26 of the data booklet.
18M.1.sl.TZ1.29: What is the index of hydrogen deficiency, IHD, of 3-methylcyclohexene? A. 0 B. 1 C. ...
18M.1.sl.TZ1.29: What is the index of hydrogen deficiency, IHD, of 3-methylcyclohexene? A. 0 B. 1 C. ...
18M.1.sl.TZ1.30: What is the ratio of the areas of the signals in the 1H NMR spectrum of pentan-3-ol? A. ...
18M.1.sl.TZ1.30: What is the ratio of the areas of the signals in the 1H NMR spectrum of pentan-3-ol? A. ...
18M.2.sl.TZ1.1g:
The mass spectrum of urea is shown below.

Identify the species responsible for the peaks at m/z = 60 and 44.
18M.2.sl.TZ1.1g:
The mass spectrum of urea is shown below.

Identify the species responsible for the peaks at m/z = 60 and 44.
18M.2.sl.TZ1.g:
The mass spectrum of urea is shown below.

Identify the species responsible for the peaks at m/z = 60 and 44.
18M.2.sl.TZ2.7c.ii:
Identify the bonds causing peaks A and B in the IR spectrum of the unknown compound using section 26 of the data booklet.
18M.2.sl.TZ2.7c.ii:
Identify the bonds causing peaks A and B in the IR spectrum of the unknown compound using section 26 of the data booklet.
18M.2.sl.TZ2.c.ii:
Identify the bonds causing peaks A and B in the IR spectrum of the unknown compound using section 26 of the data booklet.
18M.2.sl.TZ2.7c.iv:
Deduce the formula of the unknown compound based on its ¹H NMR spectrum using section 27 of the data booklet.
18M.2.sl.TZ2.7c.iv:
Deduce the formula of the unknown compound based on its ¹H NMR spectrum using section 27 of the data booklet.
18M.2.sl.TZ2.c.iv:
Deduce the formula of the unknown compound based on its ¹H NMR spectrum using section 27 of the data booklet.
18N.1.sl.TZ0.28: Which is correct for the spectra of organic compounds? A. Mass spectroscopy provides...
18N.1.sl.TZ0.28: Which is correct for the spectra of organic compounds? A. Mass spectroscopy provides...
18N.1.sl.TZ0.29: What is the ratio of areas under each signal in the 1H NMR spectrum of 2-methylbutane? A. 6...
18N.1.sl.TZ0.29: What is the ratio of areas under each signal in the 1H NMR spectrum of 2-methylbutane? A. 6...
18N.2.hl.TZ0.2b: The infrared spectrum of the compound is shown. Deduce the functional group of the compound.
18N.2.hl.TZ0.2b: The infrared spectrum of the compound is shown. Deduce the functional group of the compound.
18N.2.hl.TZ0.b: The infrared spectrum of the compound is shown. Deduce the functional group of the compound.
18N.2.hl.TZ0.2c: The mass spectrum of the compound is shown. Deduce the relative molecular mass of the compound.
18N.2.hl.TZ0.2c: The mass spectrum of the compound is shown. Deduce the relative molecular mass of the compound.
18N.2.hl.TZ0.c: The mass spectrum of the compound is shown. Deduce the relative molecular mass of the compound.
19M.2.hl.TZ1.1a:
State the number of ¹H NMR signals for this isomer of xylene and the ratio in which they appear.
19M.2.hl.TZ1.1a:
State the number of ¹H NMR signals for this isomer of xylene and the ratio in which they appear.
19M.2.hl.TZ1.a:
State the number of ¹H NMR signals for this isomer of xylene and the ratio in which they appear.
19M.1.hl.TZ2.40:
Which technique involves breaking covalent bonds when carried out on an organic compound?

A. infrared spectroscopy

B. nuclear magnetic resonance spectroscopy

C. X-ray crystallography

D. mass spectrometry
19M.1.hl.TZ2.40:
Which technique involves breaking covalent bonds when carried out on an organic compound?

A. infrared spectroscopy

B. nuclear magnetic resonance spectroscopy

C. X-ray crystallography

D. mass spectrometry
19M.2.sl.TZ1.1a:
State the number of 1H NMR signals for this isomer of xylene and the ratio in which they appear.

Number of signals:

Ratio:
19M.2.sl.TZ1.1a:
State the number of 1H NMR signals for this isomer of xylene and the ratio in which they appear.

Number of signals:

Ratio:
19M.2.sl.TZ1.a:
State the number of 1H NMR signals for this isomer of xylene and the ratio in which they appear.

Number of signals:

Ratio:
19M.2.sl.TZ2.1c(v):
The IR spectrum and low resolution ¹H NMR spectrum of the actual product formed are shown.

Deduce whether the product is A or B, using evidence from these spectra together with sections 26 and 27 of the data booklet.

Identity of product:

One piece of evidence from IR:

One piece of evidence from ¹H NMR:
19M.2.sl.TZ2.1c(v):
The IR spectrum and low resolution ¹H NMR spectrum of the actual product formed are shown.

Deduce whether the product is A or B, using evidence from these spectra together with sections 26 and 27 of the data booklet.

Identity of product:

One piece of evidence from IR:

One piece of evidence from ¹H NMR:
19M.2.sl.TZ2.c(v):
The IR spectrum and low resolution ¹H NMR spectrum of the actual product formed are shown.

Deduce whether the product is A or B, using evidence from these spectra together with sections 26 and 27 of the data booklet.

Identity of product:

One piece of evidence from IR:

One piece of evidence from ¹H NMR:
19M.3.sl.TZ2.5b:
The infrared (IR) spectrum of polyethene is given.

Suggest how the IR spectrum of polychloroethene would differ, using section 26 of the data booklet.
19M.3.sl.TZ2.5b:
The infrared (IR) spectrum of polyethene is given.

Suggest how the IR spectrum of polychloroethene would differ, using section 26 of the data booklet.
19M.3.sl.TZ2.b:
The infrared (IR) spectrum of polyethene is given.

Suggest how the IR spectrum of polychloroethene would differ, using section 26 of the data booklet.
19M.1.sl.TZ1.30:
What is the degree of unsaturation (index of hydrogen deficiency) for the molecule?

A. 1

B. 2

C. 4

D. 5
19M.1.sl.TZ1.30:
What is the degree of unsaturation (index of hydrogen deficiency) for the molecule?

A. 1

B. 2

C. 4

D. 5
19N.2.hl.TZ0.3d(iii):
Explain why the ¹H NMR spectrum of C₃H₆O, produced in (d)(i), shows only one signal.
19N.2.hl.TZ0.3d(iii):
Explain why the ¹H NMR spectrum of C₃H₆O, produced in (d)(i), shows only one signal.
19N.2.hl.TZ0.d(iii):
Explain why the ¹H NMR spectrum of C₃H₆O, produced in (d)(i), shows only one signal.
19N.3.sl.TZ0.12b(ii): The 1H NMR spectrum of one of the products has four signals. The integration trace shows a ratio...
19N.3.sl.TZ0.12b(ii): The 1H NMR spectrum of one of the products has four signals. The integration trace shows a ratio...
19N.3.sl.TZ0.b(ii): The 1H NMR spectrum of one of the products has four signals. The integration trace shows a ratio...
20N.1.sl.TZ0.30: Which region of the electromagnetic spectrum is used to identify hydrogen environments in a...
20N.1.sl.TZ0.30: Which region of the electromagnetic spectrum is used to identify hydrogen environments in a...
20N.2.sl.TZ0.1d(vi):
Deduce the number of signals and their chemical shifts in the ${}_{1}H NMR$ spectrum of ethoxyethane. Use section 27 of the data booklet.
20N.2.sl.TZ0.1d(vi):
Deduce the number of signals and their chemical shifts in the ${}_{1}H NMR$ spectrum of ethoxyethane. Use section 27 of the data booklet.
20N.2.sl.TZ0.d(vi):
Deduce the number of signals and their chemical shifts in the ${}_{1}H NMR$ spectrum of ethoxyethane. Use section 27 of the data booklet.
20N.2.sl.TZ0.2b:
The IR spectrum of one of the compounds is shown:

COBLENTZ SOCIETY. Collection © 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.

Deduce, giving a reason, the compound producing this spectrum.
20N.2.sl.TZ0.2b:
The IR spectrum of one of the compounds is shown:

COBLENTZ SOCIETY. Collection © 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.

Deduce, giving a reason, the compound producing this spectrum.
20N.2.sl.TZ0.b:
The IR spectrum of one of the compounds is shown:

COBLENTZ SOCIETY. Collection © 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.

Deduce, giving a reason, the compound producing this spectrum.
20N.2.hl.TZ0.1d(v):
Deduce the number of signals and chemical shifts with splitting patterns in the ¹H NMR spectrum of ethoxyethane. Use section 27 of the data booklet.
20N.2.hl.TZ0.1d(v):
Deduce the number of signals and chemical shifts with splitting patterns in the ¹H NMR spectrum of ethoxyethane. Use section 27 of the data booklet.
20N.2.hl.TZ0.d(v):
Deduce the number of signals and chemical shifts with splitting patterns in the ¹H NMR spectrum of ethoxyethane. Use section 27 of the data booklet.
21M.1.sl.TZ2.28:
Which spectra would show the difference between propan-2-ol, CH₃CH(OH)CH₃, and propanal, CH₃CH₂CHO?

I. mass
II. infrared
III. ¹H NMR

A. I and II only

B. I and III only

C. II and III only

D. I, II and III
21M.1.sl.TZ2.28:
Which spectra would show the difference between propan-2-ol, CH₃CH(OH)CH₃, and propanal, CH₃CH₂CHO?

I. mass
II. infrared
III. ¹H NMR

A. I and II only

B. I and III only

C. II and III only

D. I, II and III
21M.2.sl.TZ1.5b: Justify why ethene has only a single signal in its 1H NMR spectrum.
21M.2.sl.TZ1.5b: Justify why ethene has only a single signal in its 1H NMR spectrum.
21M.2.sl.TZ1.b: Justify why ethene has only a single signal in its 1H NMR spectrum.
21M.2.sl.TZ2.4e(iii):
Deduce the identity of the unknown compound using the previous information, the ¹H NMR spectrum and section 27 of the data booklet.

SDBS, National Institute of Advanced Industrial Science and Technology (AIST).
21M.2.sl.TZ2.4e(iii):
Deduce the identity of the unknown compound using the previous information, the ¹H NMR spectrum and section 27 of the data booklet.

SDBS, National Institute of Advanced Industrial Science and Technology (AIST).
21M.2.sl.TZ2.e(iii):
Deduce the identity of the unknown compound using the previous information, the ¹H NMR spectrum and section 27 of the data booklet.

SDBS, National Institute of Advanced Industrial Science and Technology (AIST).
21N.1.sl.TZ0.30:
What can be deduced from the mass spectrum of CH₃COCH₂CH₂CH₃?

NIST Mass Spectrometry Data Center Collection (C) 2021 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. 2-Pentanone Mass Spectrum, MS Number 291264. [graph] Available at: https://webbook.nist.gov/cgi/cbook.cgi?ID=C107879&Units=SI&Mask=200#Mass-Spec2-pentanone [Accessed 4 May 2020]. source adapted.

A. The molar mass is 43 g mol⁻¹.

B. The atoms have many isotopes.

C. The most likely bond to break is C–C between carbons 2 and 3.

D. The signal with the largest mass is due to the oxidation of the ketone in the spectrometer.
21N.1.sl.TZ0.30:
What can be deduced from the mass spectrum of CH₃COCH₂CH₂CH₃?

NIST Mass Spectrometry Data Center Collection (C) 2021 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. 2-Pentanone Mass Spectrum, MS Number 291264. [graph] Available at: https://webbook.nist.gov/cgi/cbook.cgi?ID=C107879&Units=SI&Mask=200#Mass-Spec2-pentanone [Accessed 4 May 2020]. source adapted.

A. The molar mass is 43 g mol⁻¹.

B. The atoms have many isotopes.

C. The most likely bond to break is C–C between carbons 2 and 3.

D. The signal with the largest mass is due to the oxidation of the ketone in the spectrometer.
21N.2.sl.TZ0.1c:
Identify each compound from the spectra given, use absorptions from the range of 1700 cm⁻¹ to 3500 cm⁻¹. Explain the reason for your choice, referring to section 26 of the data booklet.
21N.2.sl.TZ0.1c:
Identify each compound from the spectra given, use absorptions from the range of 1700 cm⁻¹ to 3500 cm⁻¹. Explain the reason for your choice, referring to section 26 of the data booklet.
21N.2.sl.TZ0.c:
Identify each compound from the spectra given, use absorptions from the range of 1700 cm⁻¹ to 3500 cm⁻¹. Explain the reason for your choice, referring to section 26 of the data booklet.
21N.2.hl.TZ0.1e: Predict the fragment that is responsible for a m/z of 31 in the mass spectrum of propan‑1‑ol. Use...
21N.2.hl.TZ0.1e: Predict the fragment that is responsible for a m/z of 31 in the mass spectrum of propan‑1‑ol. Use...
21N.2.hl.TZ0.e: Predict the fragment that is responsible for a m/z of 31 in the mass spectrum of propan‑1‑ol. Use...
22M.1.hl.TZ2.40:
Given equimolar concentrations, which substance would produce the strongest signal in a ¹H NMR spectrum?

A. (CH₃)₃CH

B. C₆H₆

C. C₈H₁₈

D. Si(CH₃)₄
22M.1.hl.TZ2.40:
Given equimolar concentrations, which substance would produce the strongest signal in a ¹H NMR spectrum?

A. (CH₃)₃CH

B. C₆H₆

C. C₈H₁₈

D. Si(CH₃)₄
22M.2.sl.TZ2.4d(iv):
Suggest two differences in the ¹H NMR of but-2-ene and the organic product from (d)(ii).
22M.2.sl.TZ2.4d(iv):
Suggest two differences in the ¹H NMR of but-2-ene and the organic product from (d)(ii).
22M.2.sl.TZ2.d(iv):
Suggest two differences in the ¹H NMR of but-2-ene and the organic product from (d)(ii).
23M.1.SL.TZ1.23: Which combination describes an electrolytic cell? Energy...
23M.1.SL.TZ1.23: Which combination describes an electrolytic cell? Energy...
23M.2.HL.TZ1.4a:
State the oxidation state of sulfur in copper (II) sulfate.
23M.2.SL.TZ1.4a:
State the oxidation state of sulfur in copper (II) sulfate.
23M.2.HL.TZ1.4a:
State the oxidation state of sulfur in copper (II) sulfate.
23M.2.HL.TZ1.a:
State the oxidation state of sulfur in copper (II) sulfate.
23M.2.SL.TZ1.4a:
State the oxidation state of sulfur in copper (II) sulfate.
23M.2.SL.TZ1.a:
State the oxidation state of sulfur in copper (II) sulfate.
23M.2.HL.TZ2.1a: An unknown organic compound, X, comprising of only carbon, hydrogen and oxygen was found to...
23M.2.HL.TZ2.1a: An unknown organic compound, X, comprising of only carbon, hydrogen and oxygen was found to...
23M.2.HL.TZ2.a: An unknown organic compound, X, comprising of only carbon, hydrogen and oxygen was found to...

Sub sections and their related questions

None

11.3 Spectroscopic identification of organic compounds

Description

Directly related questions

Sub sections and their related questions

Confirm action