Lecture 2 - Spectroscopy

What are the three different types of spectroscopy?

Absorption, emission and stimulated emission

How do you calculate transmittance?

T = I/I0

How do you calculate absorbance without transmittance?

A = εcl

How do you calculate absorption using the transmittance?

A = -logT

What are the units for the molar absorption coefficient?

cm^-1mol^-1dm^3

Where does the Beer Lambert Law start to fail?

At high concentrations when the molecules can interact with each other, which causes ε to change