Answer to Question #192649 in Physical Chemistry for Alex Faji

Question #192649

According to the IR absoprtion spectrum of carbon monoxide, CO, the vibrational frequency is 2170 cm-1. If we consider that the CO molecule behaves as a harmonic oscillator, predict the vibrational frequency if the molecule contains the isotope 13C instead of the more abundant 12C? 

v:13CO/ v:12CO = (μ:13CO:12CO)1/2

where v = vibrational frequency

μ = reduced mass.   

12C = 12.0 and m 13C = 13.0, m 16O = 16.0.




1
Expert's answer
2021-05-13T02:09:41-0400

Vibrational frequency ;

=2170cm-7


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