
Concept explainers
(a)
Interpretation:
The structure of the compound having molecular formula,
Concept introduction:
Many nuclei and electrons have spin. Due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an

Answer to Problem 13.40AP
The structure of the compound having molecular formula,
Explanation of Solution
There is only one signal in the compound that means all the protons are equivalent and all the protons are from methyl group as per chemical shift value of
Therefore, the structure of the compound corresponding to NMR data is shown below.
Figure 1
The structure of the compound having molecular formula,
(b)
Interpretation:
The structure of the compound having molecular formula
Concept introduction:
Many nuclei and electrons have spin. Due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

Answer to Problem 13.40AP
The structure of the compound having molecular formula
Explanation of Solution
There is only one signal in the compound that means all the protons are equivalent and all the protons are from methylene group as per chemical shift value of
Therefore, the structure of the compound corresponding to NMR data is shown below.
Figure 2
The structure of the compound having molecular formula
(c)
Interpretation:
The structure of the compound having molecular formula
Concept introduction:
Many nuclei and electrons have spin. Due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

Answer to Problem 13.40AP
The structure of the compound having molecular formula
Explanation of Solution
There are three signals in the compound. One is at
Therefore, the structure of the compound corresponding to NMR data is shown below.
Figure 3
The structure of the compound having molecular formula
(d)
Interpretation:
The structure of the compound having molecular formula
Concept introduction:
Many nuclei and electrons have spin. Due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

Answer to Problem 13.40AP
The structure of the compound having molecular formula
Explanation of Solution
The given spectrum is shown below.
Figure 4
There are three signals in the compound. One is at
Therefore, the structure of the compound corresponding to NMR data is shown below.
Figure 5
The structure of the compound having molecular formula
(e)
Interpretation:
The structure of the compound having molecular formula
Concept introduction:
Many nuclei and electrons have spin. Due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

Answer to Problem 13.40AP
The structure of the compound having molecular formula
Explanation of Solution
The given spectrum is shown below.
Figure 6
It is given that the
The
Figure 7
There are five signals in the compound. The two signal at
Therefore, the structure of the compound corresponding to NMR data is shown below.
Figure 8
The structure of the compound having molecular formula
(f)
Interpretation:
The structure of the compound having molecular formula
Concept introduction:
Many nuclei and electrons have spin. Due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

Answer to Problem 13.40AP
The structure of the compound having molecular formula
Explanation of Solution
There are three signals in the compound. The signal at
Therefore, the structure of the compound corresponds to NMR data as shown below.
Figure 9
The structure of the compound having molecular formula
(g)
Interpretation:
The structure of the compound having molecular formula
Concept introduction:
Many nuclei and electrons have spin. Due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

Answer to Problem 13.40AP
The structure of the compound having molecular formula
Explanation of Solution
There is only one signal in the compound for two hydrogens that means both are equivalent. The triplet signal is given by the two protons that means the splitting of the signal is done by two equivalent fluorine groups.
Therefore, the structure of the compound corresponding to NMR data is shown below.
Figure 10
The structure of the compound having molecular formula
(h)
Interpretation:
The structure of the compound having molecular formula
Concept introduction:
Many nuclei and electrons have spin. Due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

Answer to Problem 13.40AP
The structure of the compound having molecular formula
Explanation of Solution
There is only one signal in the compound for two hydrogens that means both are equivalent. The quartet signal is given by the two protons that means the splitting of the signal is done by three equivalent fluorine groups.
Therefore, the structure of the compound corresponding to NMR data is shown below.
Figure 11
The structure of the compound having molecular formula
(i)
Interpretation:
The structure of the compound having molecular formula
Concept introduction:
Many nuclei and electrons have spin. Due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

Answer to Problem 13.40AP
The structure of the compound having molecular formula
Explanation of Solution
There are three signals in the compound and total hydrogens are sixteen. The relative intergral tells about the ratio of number of hydrogen in each signal. The relative integral is
Therefore, the structure of the compound corresponding to NMR data is shown below.
Figure 12
The structure of the compound having molecular formula
(j)
Interpretation:
The structure of the compound having molecular formula
Concept introduction:
Many nuclei and electrons have spin. Due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

Answer to Problem 13.40AP
The structure of the compound having molecular formula
Explanation of Solution
There are three signals in the compound and total hydrogens are fourteen. The doublet signal at
The signal at
Therefore, the structure of the compound corresponding to NMR data is shown below.
Figure 13
The structure of the compound having molecular formula
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Chapter 13 Solutions
EBK ORGANIC CHEMISTRY
- The acid-base chemistry of both EDTA and EBT are important to ensuring that the reactions proceed as desired, thus the pH is controlled using a buffer. What percent of the EBT indicator will be in the desired HIn2- state at pH = 10.5. pKa1 = 6.2 and pKa2 = 11.6 of EBTarrow_forwardCUE COLUMN NOTES (A. Determine Stereoisomers it has ⑤ Identify any meso B compounds cl Br cl -c-c-c-c-¿- 1 CI C- | 2,4-Dichloro-3-bromopentanearrow_forwardThe acid-base chemistry of both EDTA and EBT are important to ensuring that the reactions proceed as desired, thus the pH is controlled using a buffer. What percent of the EBT indicator will be in the desired HIn2- state at pH = 10.5. pKa1 = 6.2 and pKa2 = 11.6 of EBTarrow_forward
- What does the phrase 'fit for purpose' mean in relation to analytical chemistry? Please provide examples too.arrow_forwardFor each of the substituted benzene molecules below, determine the inductive and resonance effects the substituent will have on the benzene ring, as well as the overall electron-density of the ring compared to unsubstituted benzene. Molecule Inductive Effects Resonance Effects Overall Electron-Density × NO2 ○ donating O donating O withdrawing O withdrawing O electron-rich electron-deficient no inductive effects O no resonance effects O similar to benzene E [ CI O donating withdrawing O no inductive effects Explanation Check ○ donating withdrawing no resonance effects electron-rich electron-deficient O similar to benzene © 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center Accesarrow_forwardUnderstanding how substituents activate Rank each of the following substituted benzene molecules in order of which will react fastest (1) to slowest (4) by electrophilic aromatic substitution. Explanation HN NH2 Check X (Choose one) (Choose one) (Choose one) (Choose one) © 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center Aarrow_forward
- Identifying electron-donating and electron-withdrawing effects on benzene For each of the substituted benzene molecules below, determine the inductive and resonance effects the substituent will have on the benzene ring, as well as the overall electron-density of the ring compared to unsubstituted benzene. Inductive Effects Resonance Effects Overall Electron-Density Molecule CF3 O donating O donating O withdrawing O withdrawing O no inductive effects O no resonance effects electron-rich electron-deficient O similar to benzene CH3 O donating O withdrawing O no inductive effects O donating O withdrawing Ono resonance effects O electron-rich O electron-deficient O similar to benzene Explanation Check Х © 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Centerarrow_forward* Hint: Think back to Chem 1 solubility rules. Follow Up Questions for Part B 12. What impact do the following disturbances to a system at equilibrium have on k, the rate constant for the forward reaction? Explain. (4 pts) a) Changing the concentration of a reactant or product. (2 pts) b) Changing the temperature of an exothermic reaction. (2 pts) ofarrow_forwardDraw TWO general chemical equation to prepare Symmetrical and non-Symmetrical ethers Draw 1 chemical reaction of an etherarrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning

