Explain the factors that affect the intensities of absorption in IR spectroscopy.

Question

#Please anyone to help me with explanation i have to attend test by tomorrow help me out.

Answer 1

Try reading articles on it:
https://en.wikipedia.org/wiki/Absorption_spectroscopy

Answer 2

The major factor that affects intensity of absorption is the frequency.

Atoms only absorb certain discrete energies of incident waves, based on the energy levels of their electrons.

Since frequency and energy of the incident waves are proportional, this means that only certain frequencies are readily absorbed.

Thus, certain specific frequencies have high amounts of absorption while the rest remain unaffected.

Answer 3

For a given absorption energy, the depth of the measurement, and the width of the absorption band, is largely a measurement error issue with the instrument being used. For a specific medium of set density, the amount of absorption is directly related to thickness. Double the thickness, and the incident energy has to encounter twice the amount of molecules to pass thru.