The ultraviolet spectrum of benzonitrile shows a primary absorption band at 224 nm. If a solution of benzonitrile in water, with a concentration of 1x 10-4 molar, is examined at a wavelength of 224 nm, the absorbance is determined to be 1.30. The cell length is 1 cm. What is the molar absorptivity of this absorption band?

Spectroscopy topics include: Mass Spectroscopy, Visible Spectroscopy, & Infrared Spectroscopy. Spectroscopy is a field of study that measures and interprets electromagnetic spectra. It can also be defined as the study of color as generalized from visible light to all bands of the electromagnetic spectrum.   There are three basic types of spectroscopy: Atomic absorption spectroscopy (AAS) Atomic emission spectroscopy (AES) Atomic fluorescence spectroscopy (AFS)  AAS includes methods such as: Infrared (IR) spectroscopy Ultraviolet-visible (UV-Vis) spectroscopy  Here are some types of... Show more

Spectroscopy topics include: Mass Spectroscopy, Visible Spectroscopy, & Infrared Spectroscopy.

Spectroscopy is a field of study that measures and interprets electromagnetic spectra. It can also be defined as the study of color as generalized from visible light to all bands of the electromagnetic spectrum.
 

There are three basic types of spectroscopy:
Atomic absorption spectroscopy (AAS)
Atomic emission spectroscopy (AES)
Atomic fluorescence spectroscopy (AFS) 

AAS includes methods such as:
Infrared (IR) spectroscopy
Ultraviolet-visible (UV-Vis) spectroscopy 

Here are some types of spectroscopy:

Ultraviolet spectroscopy: Uses the selective absorbance of ultraviolet radiation by various substances. It is especially useful in investigating biologically active substances such as compounds in body fluids, and drugs and narcotics.
Infrared spectroscopy: Uses the infrared region of the electromagnetic spectrum. This region of the spectrum has a longer wavelength and lower frequency than visible light. IR spectroscopy can be used to identify and study chemicals.
Raman spectroscopy: Uses the inelastic scattering of photons by molecules, which results in the molecules gaining vibrational energy and the photons losing it. It is commonly used in the branch of chemistry to provide a fingerprint by which molecules can be identified.
Nuclear magnetic resonance (NMR) spectroscopy: An advanced characterization technique. It is used to determine the molecular structure at the atomic level of a sample. 
 

Related Test: Organic Chemistry Practice Test: Nuclear Magnetic Resonance

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