What is the traditional method of infrared spectroscopy?

Answer 1

Infrared spectroscopy (IR spectroscopy) is the subset of spectroscopy that deals with the infrared region of the electromagnetic spectrum. It covers a range of techniques, with the most common type by far being a form of absorption spectroscopy. As with all spectroscopic techniques, it can be used to identify a compound and to investigate the composition of a sample.

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Answer 2

Infrared spectroscopy, or IR spectroscopy, is a method of spectroscopy used by organic chemists to help determine the structure of an unknown molecule. An IR spectrum will have peaks based on how much light was visible when shone through different parts of the molecule. The peaks' wavelengths correspond to different functional groups. For example, a broad peak between 3200 and 3600 cm-1 indicates the presence of an alcohol, or OH functional group. Another distinctive peak is the carbonyl peak, which will show up between approximately 1650 cm-1 and 1800 cm-1 depending on which functional group the carbonyl is forming. Primary amines form a distinctive double peak between 3300 and 3500 cm-1.

IR spectra are very complex, and even experienced chemists will often be unable to explain with certainty every single peak appearing in any given spectrum. IR spectra are most effective in determining the structure of an unknown molecule when used in conjunction with NMR spectra.

Answer 3

The traditional method of infrared spectroscopy involves passing infrared radiation through a sample and measuring the absorbance of different wavelengths. This data is then used to identify functional groups and chemical bonds in the sample based on the characteristic absorption peaks observed in the spectrum.

Answer 4

The principle is to measure infrared radiation absorption at different wavelengths; IR spectra are different for each material or compound.

Answer 5

I'm not sure. soz -.-

Answer 6

Infra-red spectroscopy