[CHM 111 Lab] Molar Absorptivity

[Andrew J. Pounds]

> I was trying to figure out how to find the molar absorptivity in the lab. I 
> was wondering if you would help me out.
>   
A = E b c

E is the molar absorptivity, b is the path length, c is the 
conentration, and A is the absorbance.  You did all of your measurements 
at 281 nm, so assume it is lambda max.  Take one of your 
absorbance/concentration pairs, use 1 cm for the path length, and 
compute the molar absorptivity.


-- 
Andrew J. Pounds, Ph.D.  (pounds at theochem.mercer.edu)
Associate Professor of Chemistry and Computer Science
Mercer University,  Macon, GA 31207   (478) 301-5627