You have a solution of 0.01 M #Ni(NO_3)_2#, absorbance was 0.4 at 400 nm with a path length of 1 cm. Using Beer's Law, how do you calculate #epsilon# for this solution?
1 Answer
Sep 10, 2016
Rearrange the Beer-Lambert law equation for ε and plug in the values.
Explanation:
The Beer-Lambert law equation is:
A = ε . c . l
Where:
A = absorbance
ε = extinction coeffecient
l = pathlength
Rearranging for ε
ε = A / (c . l)
I'll leave you to plug in the values.
More information on spectrophotometry can be here.
Oh, and don't forget the units...
The video below shows an experiment using a spectrophotometer.
