Absorption spectroscopy

Absorption spectroscopy
We have learned many new chemistry techniques recently, and one of them is absorption spectroscopy. Absorption spectroscopy is a useful tool for performing both qualitative analysis and quantitative analysis on solution. A beam of light is passed through the sample and a plot made of the amount of light absorbed as a function of the wavelength of the light. The wavelength of maximal absorbance are, like melting point, characteristic of particular molecular species. They can be used to identify unknowns. The amount of light absorbed is directly proportional to the concentration of the absorbing species. It can be used to determine the amount of a species present in the sample. The absorption of light by molecules will only occur when the energy of the incident light is the same as that of a possible electronic transitions depend on the kinds of bonds present, it is possible to analyze the structure of the molecule by determining the spectrum of absorbed electronic energy.