Answered: Consider the vibrational mode of CH4…

Consider the vibrational mode of CH4 that corresponds to the compression of one C-H bond while the other three C-H bonds stretch. Is it (a) Raman. (b) infrared active?

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter20: Molecular Spectroscopy And Photochemistry

Section: Chapter Questions

Problem 6P

See similar textbooks

Related questions

Q: What are the symmetry (irreducible representation) of the bending and asymmetric stretching…

A: The solution of the question is given below:

Q: A solution of a certain component of a biological sample when placed in an absorption cell of path…

A: Beer–Lambert law : This law helps use to calculate the absorption of a very dilute solutions , The…

Q: The wavenumber of the fundamental vibrational transition of 35Cl2 is 564.9 cm−1. Calculate the force…

A: Given, vibrational transition of 35Cl2 is 564.9 cm−1.

Q: What is the vibrational wavenumber for carbon dioxide? Explain how you got this answer.

A: IR spectroscopy is mainly used for the identification of functional group present in the molecule.…

Q: 3. State which of the following molecules have (a) rotational absorption spectra, i.e. are…

A: The question is based on the concept of physical Spectroscopy. we have to identify which of the…

Q: Does the exclusion rule apply to H2O?

A: H2O does not obey the rule of mutual exclusion indicates that the H2O molecule is not…

Q: he vibrationa l period of the C-H bond in tribromomethane, CHBr3, is 91.2 ps. Treating the molecule…

A: The reduced mass for the C-H bond is calculated as shown below. The reduced mass for the C-H bond is…

Q: Estimate the absorption frequency of butadiene if the sum of the bond lengths is 0.424nm

Q: What is the most highly populated rotational level of Br2 at (i) 25 °C, (ii) 100 °C? Take ᷉ B =…

A: i)

Q: E11G.1(a) The line marked A in Fig. 11.5 is the fluorescence spectrum of benzophenone in solid…

A: Given: The fluorescence spectrum of benzophenone.

Q: What information can be obtained from IR and Raman spectra and how this can be applied in COSMETIC…

A: IR active molecules are Raman inactive and vice-versa.

Q: Calculate the fundamental vibrational wavenumber of carbon monoxide, considering it to behave like a…

A: Given: Force constant = 1902.5 N/m To Calculate: a) The fundamental vibrational wavenumber of CO. b)…

Q: What is the order of decreasing vibrational frequency for C — Cl, C — Br, C — C, C — O and C — H ?

A: Vibrational frequency depends upon various factor such as electronegativity, bond strength, mass of…

Q: Which is higher in energy: electromagnetic radiation with wavenumber 100 cm−1 or with wavenumber…

A: Since the relationship between the wavenumber and energy of radiation is given by E = hcυ where h =…

Q: For 'H3$Cl molecule, (N¡/No) ratio at 300 K is 6.091 x 10² . Calculate the wavenumber ( in cm') for…

Q: a. Given that the bond length of 'H1°F is 0.91 angstrom (1 angstrom = 10-10 m), calculate the %3D…

A: Welcome to bartleby! As per company guidelines we can answer three parts .I have answered first…

Q: An electron in the 7 orbital of ethylene (C,H,) is excited by a photon to the * orbital. Do you…

A: When an electron is excited from bonding to antibonding orbitals by absorption of photon, the bond…

Q: 1) Calculate the energy of one mole of UV photons of wavelength 300 nm and compare it with a typical…

A: NOTE : Since you've posted multiple independent questions,we're solving first question for you.If…

Q: 3. What is the wavenumber of an electromagnetic radiation of frequency 4.3 x 104 Hz?

A: Given data Frequency (v) = 4.3 × 1014 Hz We know, 1Hz = s-1 Therefore, frequency (v) = 4.3 × 1014…

Q: The wavenumber of the fundamental vibrational transition of Cl 2 is 565 em·'. Calculate the force…

A: Hooke's law relates the wavenumber of the vibrational transition with the force constant and reduced…

Q: How many vibrational modes are there for the molecule NC–(C≡C–C≡C–)8CN detected in an interstellar…

A: All molecules exhibit three kinds of motions, translational, rotational, and vibrational. For a…

Q: occupying the first excited state (J = 1) to the probability of occupying the ground state (J=0) For…

Q: (4) For a rotational-vibrational spectrum of H"Br (B = 8.46 cm) taken at 520 K, determine the…

Q: How many vibrational modes are there for the molecule NC–(C≡C–C≡C–)10CN detected in an interstellar…

Q: The rotational Raman spectrum of 19F2 shows a series of Stokes lines separated by 3.5312 cm−1 and a…

A: The lines in the rotational Raman spectrum are seperated by 4B and so B = 3.5312/4 = 0.8828 cm-1 for…

Q: Suggest a reason why the replacement of 12C by 13C in CO2 affects some of its vibrational…

A: The replacing of an atom with its isotope is known as isotope effect, this is useful in an IR…

Q: Calculate the frequency and wavenumber of the J = 3 ← 2 transition in the pure rotational spectrum…

A: The relation for energy for pure rotational spectroscopy is shown below: EJ=BJJ+1For n=3…

Q: E11C.2(a) Calculate the percentage difference in the fundamental vibrational wavenumbers of "Na Cl…

Q: 5- The vibrations in infrared spectroscopy might be active or inactive?

A: IN order for a vibrational mode to absorb infrared light, it must result in a periodic change in the…

Q: The rotational constant of NH3 is 298 GHz. Calculate the separation of the pure rotational spectrum…

A: Given data: Rotational constant B = 298 GHz Formula used: Where, ν=frequency c=speed of…

Q: Which one isn’t not rotationally raman active? HCN, HF, Br2, CCL4

A: The answer is given below

Q: What % of Hg atoms are in the excited state corresponding to absorption of a 253.7 nm photon at 2500…

A: The Hg atoms will absorb the energy from photons and get excited. The percentage of Hg atoms can be…

Q: Determine the vibrational modes of selected molecular movements (in the text, cis-ML2(CO) 2 and…

A: The vibrational modes of selected molecular movements of any molecule can be determined using…

Q: Calculate the number of terminal B-H bond vibrations which are infrared and Raman active in borane…

A: B2H6 diborane belongs to D2h point group. Charachter table for D2h point group is

Q: Calculate the energy in KJ/mol associated with the 3.517-μm vibrational absorption band of an…

A: Given: Wavelength, λ = 3.517 μm Converting μm to m as: 1 μm = 10-6 m Therefore, wavelength =…

Q: What

A: Atomic absorption spectroscopy Molecular absorption spectroscopy 1.Atomic absorption…

Q: Q1. a) Use vibrational analysis to identify which vibrations of the BrF5 molecule are IR and which…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Which process in the diagram below shows fluorescence? Singlet excited states 2 Triplet excitod…

A: Furoscenece: The emission of light by a substance that has absorbed light or other electromagnetic…

Q: Which of the normal modes of (i) H2O, (ii) H2CO are Raman active?

A: (i) For H2O Molecule:The water molecule has C2V symmetry and its elements are E, C2 σxz &…

Q: What terms (expressed as S, D, etc.) can arise from the [He]2s22p 13d1 excited configuration of…

A: The terms arise from an excited carbon atom with given electronic configuration has to be given.

Q: How many vibrational modes are in (a) C¿H2 and (b) a 4,000 atom protein?

A: For a linear molecule, number of vibrational modes = 3N-5 For a non linear molecule, number of…

Q: The average spacing between the rotational lines of the P and R branches of 12C21H2 and 12C22H2 is…

A: Introduction: Rotational spectroscopy measures the energies of transition between quantized…

Q: There is no P(0) branch in rotational spectroscopy. True False

A: P branch arises in rotational spectroscopy.

Q: 7. The bond lengths of the symmetric top molecule CH3CI between C-H bond is 1.095 Å and C-Cl bond is…

A: For CH3Cl molecule, two different moment of inertia and thus, CHCl3 has two distinct rotational…

Q: Calculate the frequency separation (in megahertz) of the nuclear spin levels of a 13C nucleus in a…

A: Given information, A 13C nucleus in a magnetic field of 15.4 T given that its magnetogyric…

Q: Calculate the energy of the J=0 to J=1 rotational transition of the O₂ molecule with a bond length…

A: Answer: To solve this question we have to use the relation between energy and rotational quantum…

Q: What is the difference in population of 13C spins between the upper and lower states in a magnetic…

A: The relative difference in population between the upper and the lower states is given as: Relative…

Question

Consider the vibrational mode of CH₄ that corresponds to the compression of one C-H bond while the other three C-H bonds stretch. Is it (a) Raman. (b) infrared active?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

(hydrogen iodide, the superscripts represent the atomic mass number) (a) How fast will HI molecules rotate at the quantized rotational state with the rotational quantun number J of 2, given the bond length of 0.161 nim? (b) Calculate the effective force constant of the vibrational mode of HI at a wavenumber of 2300 cm' measured by infrared absorption spectrum. (c) HI has the bond energy of 3.06 eV. Applying the parabolic approximation to estimate the longest distance in which H and I atoms can be stretched before the dissociation of the molecular bond
(A) Explain why the spacings between the bands in the vibrational spectrum of a diatomic molecule would be expected to decrease with increasing vibrational quantum number. (B) Explain why a molecule with no dipole moment is microwave inactive but may show an infrared spectrum. (C) Explain the occurrence of P and R branches in the rotational fine structure of a vibrational transition of a diatomic molecule such as HCl or CO.
3. ^14N^16O (the superscripts represent the atomic mass number) (a) NO molecules rotate at an angular velocity of 2.01x10^12 rev/s, at the quantized rotational state with the rotational quantum number J of 3. Calculate the bond length of NO molecules. (b) Can NO molecules rotate under light irradiation? Explain your answer. (c) Calculate the effective force constant of the vibrational mode of NO at a frequency of 5.63x10^13 Hz measured by the infrared absorption spectrum. (d) NO has a bond energy of 6.29 eV. Applying the parabolic approximation to estimate the longest distance in which N and O atoms can be stretched before the dissociation of the molecular bond
(a) Draw a rough schematic of the series of resonances corresponding to a vibrational transition for a diatomic. Label the P and R branches, explain what the difference is between them, and indicate what the spacing is between the resonance lines. (b) What is the main information about a diatomic molecule that one can obtain from vibrational and rotational transition frequencies (assuming that the reduced mass is known)?
C) (A) Which molecule has a chemical formula of C₁0H17CIO OH (C) 4 OH -CI (D) ^ 67. Which bond in this molecule will have a vibrational stretching frequency located at 1,742 cm ¹2 (B) (D) HO H CI OH OH (B) (D)
(a) How many vibrational modes are there in a linear triatomic molecule? Using an example, describe which vibrations are likely to be observed in the infrared spectrum.
Rotational spectra are affected slightly by the fact that different isotopes have different masses. Suppose a sample of the common isotope 1H35Cl is changed to 1H37Cl. (a) By what fraction is the molecule’s rotational inertia different? (The bond length is 0.127 nm in each case.) (b) What is the change in energy of theℓ = 1 to theℓ = 0 transition if the isotope is changed?
What is (a) the wavenumber. (b) the wavelength of the radiation used by an FM rad io transmitter broadcasting at 88.0 MHz?
The hydrogen hal ides have the following fundamental vibrational wavenumbers: HF HCI HBr HIv/cm-1 4138 2992 2649 2308(a) Calculate the force constants of the hydrogen-halogen bonds. (b) Predict the fundamental vibrational wavenumbers of the deuterium hal ides.
The J = 0 to J = 1 rotational transition of the CO molecule occurs at a frequency of 1.15 x 1011 Hz.(A) Use this information to calculate the moment of inertia of the molecule. (B) Calculate the bond length of the molecule.
The first three absorption lines in the pure rotational spec- trum of gaseous 12C16O are found to have the frequencies 1.15 x 1011, 2.30 × 1011, and 3.46 × 1011 s-1. Calculate: (a) The moment of inertia I of CO (in kg m²) (b) The energies of the J = 1, J = 2, and J = 3 rotational levels of CO, measured from the J = 0 state (in joules) (c) The C-O bond length (in angstroms)
The wavenumber of the fundamental vibrational transition of Cl 2 is 565 em·'. Calculate the force constant of thebond.