Topic: IR Spectrum
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How to Read IR Spectrums
An infrared (IR) spectrum shows what functional groups are present in an organic molecule. In IR spectroscopy, a molecule is irradiated with electromagnetic radiation. The molecule absorbs energy if the frequency of the radiation matches th... Read More »
Source: http://www.ehow.com/how_6809192_read-ir-spectrums.html?ref=Track2...
Why KBr pellets are used in IR spectrum?
The KBr used, which should be specifically of SpecPure Grade, is Transparent to the IR radiation and does not have any known modes of vibration in the IR region of 4000-400 cm-1. Read More »
Source: http://wiki.answers.com/Q/Why_KBr_pellets_are_used_in_IR_spectrum
What regions of an IR spectrum...?
Generally , it is the " Fingerprint Region " ( Roughly from 1250 Wavenumbers to 600 Wavenumbers ) -- Equal to -- [ 8 Micron - 16.6 Micron Wavelength ] A few examples provided : Mono-Substituted Alkenes : [ 900 cm−1 Strong ; 990 cm−1 Strong ... Read More »
Source: http://answers.yahoo.com/question/index?qid=20080922110221AAp8hyN
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IR Spectrum
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Answers to Other Common Questions
IR transitions occur usually from ground state to first excited state (fundamental band) the overtones (theoretically forbidden) are transitions from ground state to the second excited level, and occur near to double wavenumber in respect t...
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Source: http://answers.yahoo.com/question/index?qid=20080416184757AA7vukO
That's the infrared spectrum - which is a type of light (just like visible light that you see). It's just one small part of the entire electromagnetic spectrum (which again, visible light is also part of). IR has a slightly longer wavelengt...
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Source: http://answers.yahoo.com/question/index?qid=20090531175335AALCiWX
λ ^-1 = wavenumber .: λ =1/(wavenumber) 4400 cm-1 λ =1/(4400 cm^-1) = 2.273 *10^-4 cm 2.273*10^-6 m =2.273 μm 650 cm-1 λ =1/(650 cm^-1) = 1.54 *10^-3 cm 15.4*10^-6 m =15.4 μm (So you are correct, and so am I!) E = h*c/λ Planck constant h = ...
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Source: http://answers.yahoo.com/question/index?qid=20091023065437AA2GigK
UV-visible absorption spectroscopy probes electronic transitions due to electronic excited states, where as absorption of IR radiation excites molecular vibrations and no electronic excited states. However, UV-visible radiation can also exc...
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Source: http://wiki.answers.com/Q/Why_are_UV_spectrum_peaks_broad_where_a...
Alcohols, phenols, and water all contain a hydrogen covalently bound to an oxygen.
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Source: http://wiki.answers.com/Q/Why_could_the_IR_spectrum_of_a_sample_w...
Should be near 1650 wavenumbers. ChaCha again soon.
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Source: http://www.chacha.com/question/where-would-a-carbon-carbon-double...
