Chemistry 1211L

Question

⦁ Consider the calibration curve for cobalt (II) nitrate.

What is the concentration of a cobalt (II) nitrate solution with an absorbance of 0.24?

Answer 1

We need to see the calibration curve, or if you have it, and the equation for the line, you can solve the problem. You would essentially use Beer Lambert law where A = ecl

A = absorbance

e = extinction coefficient

c = concentration

l = path length

Using 0.24 as A, you should be able to solve for c