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What is the unit of molar absorptivity or absorptivity which is used to determine absorbance A in Beer Lambert’s formula?(a) L mol^-1 cm^-1(b) L gm^-1 cm^-1(c) Cm(d) No unitI have been asked this question in my homework.The doubt is from Introduction to UV Visible Spectrometers in chapter Colorimetry and Spectrometry of Analytical Instrumentation

Answer»

The CORRECT option is (a) L mol^-1 cm^-1

To explain: The unit of ABSORPTIVITY is L mol^-1 cm^-1. If concentration is represented as GM per litre it becomes L gm^-1 cm^-1.



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