a.) The spacings of the rotational fine structure lines of carbon dioxide 12C16O2 are determined from IR spectroscopy to be 0.7604 cm-1. Calculate the C=O bond length of the molecule (given masses: m(12C) = 12 amu, m(16O) = 15.9949 amu).Ans = ______ Angstroms b.) Suppose that the wavenumber of the J = 1 ← 0 rotational transition of 1H79Br considered as a rigid rotor was measured to be 17.89 cm-1, what is the bond length? Ans = ____ Angstroms When the moment of interia is 3.132x10^-47 kg*m^2(Given the isotopic masses:(m(79Br) = 78.9183 amu, m(81Br) = 80.9163 amu)

a.) The spacings of the rotational fine structure lines of carbon dioxide 12C16O2 are determined from IR spectroscopy to be 0.7604 cm-1. Calculate the C=O bond length of the molecule (given masses: m(12C) = 12 amu, m(16O) = 15.9949 amu).Ans = __ Angstroms b.) Suppose that the wavenumber of the J = 1 ← 0 rotational transition of 1H79Br considered as a rigid rotor was measured to be 17.89 cm-1, what is the bond length? Ans = Angstroms When the moment of interia is 3.132x10^-47 kg*m^2(Given the isotopic masses:(m(79Br) = 78.9183 amu, m(81Br) = 80.9163 amu)

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter18: Raman Spectroscopy

Section: Chapter Questions

Problem 18.7QAP

See similar textbooks

Similar questions

An antihistamine shows sharp peaks at Raman shifts of v 488, 725,875, 925, and 1350 cm-1. At what wavelengths in nanometers would the Stokes and anti-Stokes lines for the antihistamine appear if the source were (a) a helium-neon Laser (632.8 nm)? (b) an argon-ion laser (488.0 nm)?
Why is 133C-133C spin-spin splitting not observed in ordinary organic compounds?
The vibrational transtion from v=0 to v=1 in CO occured at wavenumber= 2143.4 cm-1 calculate the force constant of CO
a.) The spacings of the rotational fine structure lines of carbon dioxide 12C16O2 are determined from IR spectroscopy to be 0.7604 cm-1. Calculate the C=O bond length of the molecule (given masses: m(12C) = 12 amu, m(16O) = 15.9949 amu). Ans = ________ Angstroms b.) A molecule in a gas undergoes 3e+09 collisions in each second. Suppose that(i) every collision is effective in deactivating the molecule rotationally. Calculate the linewidth of rotational transitions in the molecule. Ans = _________ MHz(ii) Suppose that 1 collisions in 10 are effective. Ans = _______ MHz
Suppose that the wavenumber of the J = 1 ← 0 rotational transition of 1H79Br considered as a rigid rotor was measured to be 17.89 cm-1, what is(a) the moment of inertia of the molecule? ______ kg-m2(b) the bond length? ______ Angstroms(Given the isotopic masses:(m(79Br) = 78.9183 amu, m(81Br) = 80.9163 amu)
Find the reducible for S=O stretching frequencies in SO2Cl2. How many are IR vs Raman active?
Suppose you were seeking the presence of (planar) S03 molecules in the microwave spectra of interstellar gas clouds. (a) You would need to know the rotational constants A and B. Calculate these parameters for 32S16O3, for which the S-O bond length is 143 pm. (b) Could you use microwavespectroscopy to distinguish the re lative abundances of 32S16O3 and 33S16O3?
The protein haemerythrin (Her) is responsible for binding and carrying O2 in some invertebrates. Each protein molecule has two Fe2+ ions that are in very close proximity and work together to bind one molecule of O2, form ing an Fe2O2 group. (a) The Raman spectrum of oxygenated haemerythrinobtained with laser excitation at 500 nm has a band at 844 cm-1 which has been attributed to the O-O stretching mode of bound 16O2. Why is Raman spectroscopy and not infrared spectroscopy the method of choice for the study of the binding of O2 to haemerythrin? (b) Proof that the 844 cm-1band in the Raman spectrum of oxygenated haemerythrin arises from a bound O2 species may be obtained by conducting experiments on samples of haemerythrin that have been mixed with 18O2, instead of 16O2 . Predict the fundamental vibrational wavenumber of the 18O-18O stretching mode in a sample of haemerythrin that has been treated with 18O2. (c) The fundamental vibrational wavenumbers for the O-O stretching modes of O2,…
a.) Calculate the frequency of the J = 7 ← 6 transition in the pure rotational spectrum of 12C16O. Assume the equilibrium bond length is 109.36pm.Frequency is ______ HzWhat is the corresponding wavenumber? _________ cm-1 b.) Suppose that the wavenumber of the J = 1 ← 0 rotational transition of 1H79Br considered as a rigid rotor was measured to be 17.89 cm-1, what is(a) the moment of inertia of the molecule? Ans = 3.132E-47 kg-m2(b) the bond length? ________ Angstroms(Given the isotopic masses:(m(79Br) = 78.9183 amu, m(81Br) = 80.9163 amu)
For 1H35Cl molecule, (N1/N0) ratio at 300 K is 6.091 x 10^-2. Calculate the wavenumber ( in cm^-1 ) for J=2→J=3 transition in the microwave spectrum of the molecule.
Calculate the wavenumber (cm^-1) and excitation energy (kj/mol) for each of the following max wavelengths: a.) 327.6 nm b.) 452.98 nm c.) 579.1 nm
Infrared absorption by 1H127I gives rise to an R branch from v = 0. What is the wavenumber of the line originating from the rotational state with J = 2? Hint: Use data from Table 11C.1.