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23 Nov 2019
Infrared spectra are used by chemists to help identify anunknownsubstance. Atoms in a molecule that are bound together byaparticular bond vibrate at a predictable frequency, and lightatthat frequency is absorbed strongly by the atom. In the case oftheC=O double bond, for example, the oxygen atom is bound tothecarbon by a bond that has an effective spring constant of 2800N/m.If we assume that the carbon atom remains stationary (itisattached to other atoms in the molecule), determine theresonantfrequency of this bond and the wavelength of light thatmatchesthat frequency. (The mass of an oxygen atom is 2.66x10-26 kg.)
f = Hz λ = µm
Does this wavelength lie in the infrared region ofthespectrum?
3Yes No
Infrared spectra are used by chemists to help identify anunknownsubstance. Atoms in a molecule that are bound together byaparticular bond vibrate at a predictable frequency, and lightatthat frequency is absorbed strongly by the atom. In the case oftheC=O double bond, for example, the oxygen atom is bound tothecarbon by a bond that has an effective spring constant of 2800N/m.If we assume that the carbon atom remains stationary (itisattached to other atoms in the molecule), determine theresonantfrequency of this bond and the wavelength of light thatmatchesthat frequency. (The mass of an oxygen atom is 2.66x10-26 kg.)
| f = | Hz |
| λ = | µm |
Does this wavelength lie in the infrared region ofthespectrum?
3
Yes No 
Patrina SchowalterLv2
15 Sep 2019
