UV-Vis spectroscopy can be used to detect functional groups, determine the extent of conjugation, and identify unknown groups by observing shifts in absorption maxima. It has applications in identifying poly nuclear hydrocarbons, elucidating vitamins A1 and A2, and determining tautomeric forms through hypsochromic, bathochromic, hyperchromic, and hypochromic shifts observed in absorption spectra.

1. UV-Vis Spectroscopy

5. 
“bathochromic” shift“hypsochromic” shift
Hyperchromic
Hypochromic

6. Applications:
 Detection of functional group
 Extent of conjugation
 Conjugation and non conjugation
 Identification of unknown groups
 Poly nuclear Hydrocarbons
 Elucidation of vitamins A1 and A2
 Tautomeric Form Identification