BEER LAMBERTS LAW

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BEER LAMBERTS LAW  

When a beam of monochromatic EM radiation is passed through an Absorbing solution of concentration (c), the rate of decrease in intensity(-dI) of radiation with a thickness of the solution (dx) is proportional to the intensity of the radiation (I) and concentration (c) of the solution.

-dI/dx ∝ Ic 

-dI/dx = kIc 

-dI/I =kcdx

Beer Lambert's law gives the linear relationship between the absorbance of EM radiation and the concentration of an absorber.

A = εcL

A is the absorbance

c is the concentration

L is the path length

Ε is the molar extinction coefficient



Location: United States

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