Briefly explain the effect of isotopic substitution in the rotational spectrum of diatomic molecules with appropriate figures. Calculate the atomic mass of 13C given that first rotational absorption for 12C¹0 16 and 13C O is observed at 3.84235cm and 3.67337cm respectively. Assume same bond length and mass of oxygen to be 15.9994 & carbon- 12 to be 12.000amu.

Briefly explain the effect of isotopic substitution in the rotational spectrum of diatomic molecules with appropriate figures. Calculate the atomic mass of 13C given that first rotational absorption for 12C¹0 16 and 13C O is observed at 3.84235cm and 3.67337cm respectively. Assume same bond length and mass of oxygen to be 15.9994 & carbon- 12 to be 12.000amu.

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 13P

See similar textbooks

Similar questions

The vibrational frequency of Br2 is 414 cm-1. At 800K what is the percentage of particles in (1) the ground state and in (2) the first excited state?
The J = 2 → 3 pure-rotational transition for the ground vibrational state of 39K37C1 occurs at 22410 MHz. Neglecting centrifugal distortion, predict the frequency of the J = 0 → 1 pure-rotational transition of (a) 3ºK³7CI, and (b) 3ºK³C1. You may use the mass numbers as the masses of the corresponding atoms expressed in amu.
Explain microwave spectra of rigid and non rigid rotors.
How many normal modes of vibration are there for (a)NO,. (b) N20. (c) cyclohexane. (d) hexane?
The pure rotational spectrum of1H131I consists of a series of linesseparated bu 13.10 cm−1. Calculate (a) the moment of interia, and (b) the internuclear distance.
(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)?
Vibration-rotation transitions in the infrared spectrum of 1H19F were observed at 2886.50, 2908.51, 2930.43, 2974.55, 2996.57, 3018.58 cm-1. (a) By considering the separations between pairs of lines. (b) Determine the bond length of 1H19F.
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.
4. To what do the terms P, Q, and R branch refer to in a rotational-vibrational spectrum?
Calculate the rotational constant Bo of deuterium chloride (DCI, i.e. hydrogen substituted by Calculate the rotational constant Ba of deuterium chloride (DCI, i.e. hydrogen substituted deutenum) and explain in what respect the vibration-rotation spectrum of DCI will differ from that of HCl in view of this value. Bg/cm1 5.
calculate the rotational energy of Nitrogen 14 oxygen-16 corresponding to J=1 level in joule and in 1/cm assuming it to be rigid rotor.The atomic masses of nitrogen 14 and oxygen 16 are 140.004amu and 15.994amu respectively and the bond lenghth is 115pm
Chemistry Identify the mayor peaks and the vibrational modes of this infrared spectrum of used 10W30 Blended High Mileage car oil.