(a)
Interpretation:
The active or inactive state of the molecule
Concept introduction:
A molecule is active in the infrared spectrum if it has the net dipole moment.
The vibrations are classified into the two categories.
- The stretching vibration (In this vibration the interatomic distance is changes continuously along with bond axis).
- The bending vibration (In the vibration the change in the angle between the two bonds take place).
The bending vibrations are further classified into four categories.
- The wagging vibration.
- The twisting vibration.
- The rocking vibration.
- The scissoring vibration.
(b)
Interpretation:
The active or inactive state of the molecule
Concept introduction:
A molecule is active in the infrared spectrum if it has the net dipole moment.
The vibrations are classified into the two categories.
- The stretching vibration (In this vibration the interatomic distance is changes continuously along with bond axis).
- The bending vibration (In the vibration the change in the angle between the two bonds take place).
The bending vibrations are further classified into four categories.
- The wagging vibration.
- The twisting vibration.
- The rocking vibration.
- The scissoring vibration.
(c)
Interpretation:
The active or inactive state of the molecule
Concept introduction:
A molecule is active in the infrared spectrum if it has the net dipole moment.
The vibrations are classified into the two categories.
- The stretching vibration (In this vibration the interatomic distance is changes continuously along with bond axis).
- The bending vibration (In the vibration the change in the angle between the two bonds take place).
The bending vibrations are further classified into four categories.
- The wagging vibration.
- The twisting vibration.
- The rocking vibration.
- The scissoring vibration.
(d)
Interpretation:
The active or inactive state of the molecule
Concept introduction:
A molecule is active in the infrared spectrum if it has the net dipole moment.
The vibrations are classified into the two categories.
- The stretching vibration (In this vibration the interatomic distance is changes continuously along with bond axis).
- The bending vibration (In the vibration the change in the angle between the two bonds take place).
The bending vibrations are further classified into four categories.
- The wagging vibration.
- The twisting vibration.
- The rocking vibration.
- The scissoring vibration.
(e)
Interpretation:
The active or inactive state of the molecule
Concept introduction:
A molecule is active in the infrared spectrum if it has the net dipole moment.
The vibrations are classified into the two categories.
- The stretching vibration (In this vibration the interatomic distance is changes continuously along with bond axis).
- The bending vibration (In the vibration the change in the angle between the two bonds take place).
The bending vibrations are further classified into four categories.
- The wagging vibration.
- The twisting vibration.
- The rocking vibration.
- The scissoring vibration.
(f)
Interpretation:
The active or inactive state of the molecule
Concept introduction:
A molecule is active in the infrared spectrum if it has the net dipole moment.
The vibrations are classified into the two categories.
- The stretching vibration (In this vibration the interatomic distance is changes continuously along with bond axis).
- The bending vibration (In the vibration the change in the angle between the two bonds take place).
The bending vibrations are further classified into four categories.
- The wagging vibration.
- The twisting vibration.
- The rocking vibration.
- The scissoring vibration.
(g)
Interpretation:
The active or inactive state of the molecule
Concept introduction:
A molecule is active in the infrared spectrum if it has the net dipole moment.
The vibrations are classified into the two categories.
- The stretching vibration (In this vibration the interatomic distance is changes continuously along with bond axis).
- The bending vibration (In the vibration the change in the angle between the two bonds take place).
The bending vibrations are further classified into four categories.
- The wagging vibration.
- The twisting vibration.
- The rocking vibration.
- The scissoring vibration.
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Chapter 16 Solutions
Principles of Instrumental Analysis, 6th Edition
- Indicate whether the following vibrations are active or inactive in the IR spectrum,justify your answer.arrow_forwardWhy is this the correct spectra for these molecules? Identify specific absorption band which identifies each characteristic functional group of the molecule chosen.arrow_forwardIdentify all the peaks from the IR spectrum and assign the bonds these peaks belong to.arrow_forward
- What is the unknown of this IR spectrum?arrow_forwardIdentify the compound based on the given spectra. Find the name of the molecule and its stretching frequency and give the structure.arrow_forward10) For each spectrum, give the following: What type of spectroscopy produces a spectrum that looks like that What type or types of energy transitions are involved (i.e. electron going from one atomic orbital to another, molecule going from a lower vibrational state to a higher vibrational state, etc.) What quantum mechanical model or theory provides a description for the type of spectroscopy (i.e. harmonic oscillator model, molecular orbital theory, etc.) What part of the electromagnetic spectrum is absorbed or emitted by the energy transitions for the type of spectroscopy Describe what information this type of spectroscopy can give us about an atom or molecule and how the spectrum is interpretedarrow_forward
- Explain Infrared Spectroscopy?arrow_forwardDescribe the atom bonding pattern and type of vibrational mode giving rise to each of the key IR peaksarrow_forwardWrite down the approximate number of waves that appear on the FTIR spectra for the compounds Cyclohexanol and Butanoate Acid! analyze spectroscopy(Fourier-transform infrared spectroscopy)arrow_forward
- Which one of the following atomic spectroscopy methods gives the smallest detection limit for sodium? Flame Absorption Electrothermal Absorption Flame Emission ICP torch Emissionarrow_forwardWhat are the vibrational modes of mefenamic acid?arrow_forwardExplain why or why not the fingerprint region of the IR spectrum cannot be predicted. Use the basis for IR absorption in your argument.arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage LearningPhysical ChemistryChemistryISBN:9781133958437Author:Ball, David W. (david Warren), BAER, TomasPublisher:Wadsworth Cengage Learning,Principles of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
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