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6 Nov 2019
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Prove that when including the centrifugal distortion constant, for a transition from the lowr (f'') to the upper (f') rotational state. delta Eret = 2Bhj' - 4Dh2j-3 The first three absorption lines in the rotational spectrum for HBr arc at 16.93,33.86, and 50.78 cm~x. Ignoring the (liny) centrifugal distortion term of the above equation, calculate the rotational constant. B. (in Hz) and bond length of HBr (in pm) from these data and from the rediKcd mass of the molcculc (don't forget to convert the reduced maw to kg/moleculc before plugging it into the moment of inertia equation). Prove that when including the anharmonicity coefficient, for a transition from the lower (v") to the upper (v') vibrational state. Delta Evib = [1 - 2xe(v')]hv Ignoring the (minute) anharmonicity effects, the fundamental vibrational frequency for HBr U 2648 cm-1, and the fundamental vibration frequency for DBr is 1879 cm-1 (where "D" is a dcuteron, 2 H). Calculate the force constants (in N/m) for HBr and DBr (remember, reduced masses are should be in kg/molecule) - See Example 17.2 in the textbook for guidance. Show transcribed image text
only top two please. A and B
Prove that when including the centrifugal distortion constant, for a transition from the lowr (f'') to the upper (f') rotational state. delta Eret = 2Bhj' - 4Dh2j-3 The first three absorption lines in the rotational spectrum for HBr arc at 16.93,33.86, and 50.78 cm~x. Ignoring the (liny) centrifugal distortion term of the above equation, calculate the rotational constant. B. (in Hz) and bond length of HBr (in pm) from these data and from the rediKcd mass of the molcculc (don't forget to convert the reduced maw to kg/moleculc before plugging it into the moment of inertia equation). Prove that when including the anharmonicity coefficient, for a transition from the lower (v") to the upper (v') vibrational state. Delta Evib = [1 - 2xe(v')]hv Ignoring the (minute) anharmonicity effects, the fundamental vibrational frequency for HBr U 2648 cm-1, and the fundamental vibration frequency for DBr is 1879 cm-1 (where "D" is a dcuteron, 2 H). Calculate the force constants (in N/m) for HBr and DBr (remember, reduced masses are should be in kg/molecule) - See Example 17.2 in the textbook for guidance.
Show transcribed image text