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 (