# Rotational And Vibrational Spectra Discussion

Rotational And Vibrational Spectra Discussion
Rotational And Vibrational Spectra Discussion
Determine the energy (£) of a photon of infrared radiation with a
wavelength (A) of 5.00 x 10~° m.
Determine the energy (£) per mole of photons of infrared radiation
with a wavelength (A) of 5.00 x 10~° m.
The energy difference between two different vibrational states (AZ) is
4.21 x 10°°° J. What is the vibrational frequency (Vv) relating these two —
states? i NCEEereser
Photochemical reactions may require an activation energy (E,) of 5.5 X
104 J mol-!. What is the wavelength (A) of a photon with this energy?
pemmre Photochemical reactions may require an activation energy (£,) of 5.5 X
10* J mol!. The wavelength (A) is 2.2 x 10° m. What is the energy in |
terms of wavenumbers (V)? i
Photochemical reactions may require an activation energy (£,) of 5.5 X
Rotational And Vibrational Spectra Discussion
4 J mol”!. The wavelength (A) is 2.2 x 10-° m. What is the energy in —
terms of electronvolts?
Determine the wavenumber (V) that corresponds to the thermal energy —
(AT) av 298 KT:
How many degrees of freedom are in dinitrogen oxide, N,O?
How many degrees of freedom are in nitrogen dioxide, NO,?
How many normal modes of vibration are there for pyridine, C;H;N:
NA ES
> McGraw-Hill’s 500 Physical Chemistry Questions
The fundamental vibrational frequency (V) for 1H35Cl is 2,990 cm™!, and
the anharmonicity correction (xV) is 52.1 cm™’. What is the dissociation
energy (D) of IHC}?
Determine the reduced mass (|) of a *H?’Cl molecule. The atomic
weights of hydrogen-2 and chlorine-37 are 2.0140 and 36.947 g mol |,
respectively.
The reduced mass ({1) of the 2H*”CI molecule is 3.1715 x 10-4 g, and the
bond length (7) is 1.275 x 107’° m. What is the moment of inertia (/) for
a *H°’Cl molecule?
The moment of inertia (/) for a 7H°’CI molecule is 5.156 x 10-4” kg m?.
Determine the wavelengths for the /= 0 to /= 1 and the /= 1 to /=2
transition.
Calculate the force constant (

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