[CHM 331] 14.28

[Andrew J. Pounds]

On 11/15/12 13:37, Stacey Hernandez wrote:
> I am really not sure how I need to use the data given for 14.28, we 
> are given transmittance and the concentrations at those transmittance. 
> Would eq 14.14 work for this problem, if so what does the variable L 
> stand for?

L is the path length.

Now -- look back at equation 14.15.

log(I/Io) = -epsilon c L

epsilon is the absorption coefficient, c is the concentration, and L is 
the path length through the cell.

If you plot log(I/Io) vs c you should get a straight line with slope 
-epsilon L.

Solve for epsilon.

You can then use your new equation to answer the last part of the question.

  There are lots of ways to do this problem -- but that's the first way 
I thought of doing it...

-- 
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