Use the ve values from Table 14.4 to calculate anharmonicity constants xe and nexe for HBr and CO,...

Question

Use the ve values from Table 14.4 to calculate anharmonicity constants x_e and n_ex_e for HBr and CO, and compare them to the tabulated values. Use D₀ (HBr) = 362 kJ/mol and D₀ (CO) = 1071 kJ/mol.

Table 14.4

Vibrational parameters of various hetero nuclear diatomic moleculesa

Molecule	_e(cm^-1)	x_e _e(cm^-1)	Internuclear distance, Å
HF	4138.52	90.07	0.9171
HCl	2989.74	52.05	1.275
HBr	2649.67	45.21	1.413
OH	3735.21	82.81	0.9706
OD	2720.9	44.2	0.9699
NO	1904.03	13.97	1.1508
CO	2170.21	13.46	1.1281
LiH	1055.12	13.22	1.5949

Robert · Accepted Answer

The relationship between De and D0, for diatomic 
molecules, is
As part of the solution to the Schrödinger equation, the anharmonicity constant 
appears as a combination of other constants about the vibration. It is defined 
as
1 kJ/mol= 85.

Use the v e values from Table 14.4 to calculate anharmonicity constants x e and n e x e for HBr and CO, and compare them to the tabulated values. Use D 0 (HBr) = 362 kJ/mol and D 0 (CO) = 1071 kJ/mol....

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