Spectroscopy When we have an unknown compound, we need to identify it with spectroscopy. Spectroscopy is a general term used for the instrumental processes by which information about the molecular structure is obtained through careful analysis of the absorption , scattering , or emission of electromagnetic radiation by compounds. Structure identification of compound can be divided into three types of spectroscopy based on the principles, such as ultraviolet spectroscopy, infrared spectroscopy, and NMR spectroscopy. Identification of the unknown compounds can be analyzed by using ultraviolet Spectroscopy. The ultraviolet spectrum of the unknown compounds will absorb in the UV-Vis wavelength range (λ maks ) . The spectrum will absorb at a given wavelength and this property is due to functional groups, conjugation, etc. UV-Vis can be used in a qualitative manner, to identify functional groups or confirm the identity of a compound by matching t...
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